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AIR FILTER - 4 INCH, MERV 11

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These are four inch deep, MERV 11 air filters. We also offer these air filters in 1" - 2" and 6" sizes, and in MERV 8 and MERV 13. To understand the meaning of MERV, go to Additional Air Filter Info at bottom of page.

To find your size quickly, enter the size in the search box on the left.  Enter it like this: 
Example - 8x14x2  or  9.75x23.75x2....No spaces between the letters or digits.

We have a lot of "Standard Size air filters, but if you can't find your size on our website we can custom-make a filter in any size. Find out how to Order it.


Caution:
  One can easily be mislead by the size written on the filter frame, and order the wrong filter.  To avoid this, go to Additional Air Filter Info at bottom of page for an explanation.

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6.88x15.88x4 (Actual Size) Accumulair Platinum 4-Inch Filter (MERV 11) 6.88x15.88x4 (Actual Size) Air Filter - Furnace Filter (MERV 11)
ONLY: $14.98 each - FREE SHIPPING + SAVE When You Order More
8x14x4 (Actual Size) Accumulair Platinum 4-Inch Filter (MERV 11) 8x14x4 (Actual Size) Air Filter - Furnace Filter (MERV 11)
ONLY: $14.98 each - FREE SHIPPING + SAVE When You Order More
8x16x4 (7.5 x 15.5 x 3.75) Accumulair Platinum 4-Inch Filter (MERV 11) 8x16x4 (7.5 x 15.5 x 3.75) Air Filter - Furnace Filter (MERV 11)
ONLY: $14.98 each - FREE SHIPPING + SAVE When You Order More
8x20x4 (Actual Size) Accumulair Platinum 4-Inch Filter (MERV 11) 8x20x4 (Actual Size) Air Filter - Furnace Filter (MERV 11)
ONLY: $14.98 each - FREE SHIPPING + SAVE When You Order More
8x24x4 (Actual Size) Accumulair Platinum 4-Inch Filter (MERV 11) 8x24x4 (Actual Size) Air Filter - Furnace Filter (MERV 11)
ONLY: $14.98 each - FREE SHIPPING + SAVE When You Order More
8x30x4 (7.5 x 29.5 x 3.75) Accumulair Platinum 4-Inch Filter (MERV 11) 8x30x4 (7.5 x 29.5 x 3.75) Air Filter - Furnace Filter (MERV 11)
ONLY: $17.13 each - FREE SHIPPING + SAVE When You Order More
8x30x4 (Actual Size) Accumulair Platinum 4-Inch Filter (MERV 11) 8x30x4 (Actual Size) Air Filter - Furnace Filter (MERV 11)
ONLY: $24.62 each - FREE SHIPPING + SAVE When You Order More
9.75x23.75x4 (Actual Size) Accumulair Platinum 4-Inch Filter (MERV 11) 9.75x23.75x4 (Actual Size) Air Filter - Furnace Filter (MERV 11)
ONLY: $18.20 each - FREE SHIPPING + SAVE When You Order More
10x10x4 (9.5 x 9.5 x 3.75) Accumulair Platinum 4-Inch Filter (MERV 11) 10x10x4 (9.5 x 9.5 x 3.75) Air Filter - Furnace Filter (MERV 11)
ONLY: $16.05 each - FREE SHIPPING + SAVE When You Order More
10x10x4 (Actual Size) Accumulair Platinum 4-Inch Filter (MERV 11) 10x10x4 (Actual Size) Air Filter - Furnace Filter (MERV 11)
ONLY: $16.05 each - FREE SHIPPING + SAVE When You Order More
10x14x4 (9.5 x 13.5 x 3.75) Accumulair Platinum 4-Inch Filter (MERV 11) 10x14x4 (9.5 x 13.5 x 3.75) Air Filter - Furnace Filter (MERV 11)
ONLY: $16.05 each - FREE SHIPPING + SAVE When You Order More
10x14x4 (Actual Size) Accumulair Platinum 4-Inch Filter (MERV 11) 10x14x4 (Actual Size) Air Filter - Furnace Filter (MERV 11)
ONLY: $16.05 each - FREE SHIPPING + SAVE When You Order More
10x15x4 (9.5 x 14.5 x 3.75) Accumulair Platinum 4-Inch Filter (MERV 11) 10x15x4 (9.5 x 14.5 x 3.75) Air Filter - Furnace Filter (MERV 11)
ONLY: $16.05 each - FREE SHIPPING + SAVE When You Order More
10x16x4 (9.5 x 15.5 x 3.75) Accumulair Platinum 4-Inch Filter (MERV 11) 10x16x4 (9.5 x 15.5 x 3.75) Air Filter - Furnace Filter (MERV 11)
ONLY: $16.05 each - FREE SHIPPING + SAVE When You Order More
10x18x4 (Actual Size) Accumulair Platinum 4-Inch Filter (MERV 11) 10x18x4 (Actual Size) Air Filter - Furnace Filter (MERV 11)
ONLY: $16.05 each - FREE SHIPPING + SAVE When You Order More
10x20x4 (9.5 x 19.5 x 3.75) Accumulair Platinum 4-Inch Filter (MERV 11) 10x20x4 (9.5 x 19.5 x 3.75) Air Filter - Furnace Filter (MERV 11)
ONLY: $16.05 each - FREE SHIPPING + SAVE When You Order More
10x24x4 (9.5 x 23.5 x 3.75) Accumulair Platinum 4-Inch Filter (MERV 11) 10x24x4 (9.5 x 23.5 x 3.75) Air Filter - Furnace Filter (MERV 11)
ONLY: $17.13 each - FREE SHIPPING + SAVE When You Order More
10x24x4 (Actual Size) Accumulair Platinum 4-Inch Filter (MERV 11) 10x24x4 (Actual Size) Air Filter - Furnace Filter (MERV 11)
ONLY: $17.13 each - FREE SHIPPING + SAVE When You Order More
10x25x4 (9.5 x 24.5 x 3.75) Accumulair Platinum 4-Inch Filter (MERV 11) 10x25x4 (9.5 x 24.5 x 3.75) Air Filter - Furnace Filter (MERV 11)
ONLY: $17.13 each - FREE SHIPPING + SAVE When You Order More
10x30x4 (9.75 x 29.75 x 3.75) Accumulair Platinum 4-Inch Filter (MERV 11) 10x30x4 (9.75 x 29.75 x 3.75) Air Filter - Furnace Filter (MERV 11)
ONLY: $24.62 each - FREE SHIPPING + SAVE When You Order More
11.25x11.25x4 (Actual Size) Accumulair Platinum 4-Inch Filter (MERV 11) 11.25x11.25x4 (Actual Size) Air Filter - Furnace Filter (MERV 11)
ONLY: $16.05 each - FREE SHIPPING + SAVE When You Order More
11.25x19.25x4 (Actual Size) Accumulair Platinum 4-Inch Filter (MERV 11) 11.25x19.25x4 (Actual Size) Air Filter - Furnace Filter (MERV 11)
ONLY: $16.05 each - FREE SHIPPING + SAVE When You Order More
11.25x23.25x4 (Actual Size) Accumulair Platinum 4-Inch Filter (MERV 11) 11.25x23.25x4 (Actual Size) Air Filter - Furnace Filter (MERV 11)
ONLY: $16.05 each - FREE SHIPPING + SAVE When You Order More
11.5x21x4 (Actual Size) Accumulair Platinum 4-Inch Filter (MERV 11) 11.5x21x4 (Actual Size) Air Filter - Furnace Filter (MERV 11)
ONLY: $16.05 each - FREE SHIPPING + SAVE When You Order More
12.5x21x4 (Actual Size) Accumulair Platinum 4-Inch Filter (MERV 11) 12.5x21x4 (Actual Size) Air Filter - Furnace Filter (MERV 11)
ONLY: $17.13 each - FREE SHIPPING + SAVE When You Order More
12.75x21x4 (Actual Size) Accumulair Platinum 4-Inch Filter (MERV 11) 12.75x21x4 (Actual Size) Air Filter - Furnace Filter (MERV 11)
ONLY: $17.13 each - FREE SHIPPING + SAVE When You Order More
12x12x4 (11.5 x 11.5 x 3.75) Accumulair Platinum 4-Inch Filter (MERV 11) 12x12x4 (11.5 x 11.5 x 3.75) Air Filter - Furnace Filter (MERV 11)
ONLY: $16.05 each - FREE SHIPPING + SAVE When You Order More
12x12x4 (Actual Size) Accumulair Platinum 4-Inch Filter (MERV 11) 12x12x4 (Actual Size) Air Filter - Furnace Filter (MERV 11)
ONLY: $16.05 each - FREE SHIPPING + SAVE When You Order More
12x16x4 (11.5 x 15.5 x 3.75) Accumulair Platinum 4-Inch Filter (MERV 11) 12x16x4 (11.5 x 15.5 x 3.75) Air Filter - Furnace Filter (MERV 11)
ONLY: $16.05 each - FREE SHIPPING + SAVE When You Order More
12x18x4 (11.75 x 17.75 x 3.75) Accumulair Platinum 4-Inch Filter (MERV 11) 12x18x4 (11.75 x 17.75 x 3.75) Air Filter - Furnace Filter (MERV 11)
ONLY: $17.13 each - FREE SHIPPING + SAVE When You Order More
12x18x4 (Actual Size) Accumulair Platinum 4-Inch Filter (MERV 11) 12x18x4 (Actual Size) Air Filter - Furnace Filter (MERV 11)
ONLY: $17.13 each - FREE SHIPPING + SAVE When You Order More
12x20x4 (11.5 x 19.5 x 3.75) Accumulair Platinum 4-Inch Filter (MERV 11) 12x20x4 (11.5 x 19.5 x 3.75) Air Filter - Furnace Filter (MERV 11)
ONLY: $17.13 each - FREE SHIPPING + SAVE When You Order More
12x20x4 (11.75 x 19.75 x 3.75) Accumulair Platinum 4-Inch Filter (MERV 11) 12x20x4 (11.75 x 19.75 x 3.75) Air Filter - Furnace Filter (MERV 11)
ONLY: $17.13 each - FREE SHIPPING + SAVE When You Order More
12x22x4 (Actual Size) Accumulair Platinum 4-Inch Filter (MERV 11) 12x22x4 (Actual Size) Air Filter - Furnace Filter (MERV 11)
ONLY: $17.13 each - FREE SHIPPING + SAVE When You Order More
12x24x4 (11.75 x 23.75 x 3.75) Accumulair Platinum 4-Inch Filter (MERV 11) 12x24x4 (11.75 x 23.75 x 3.75) Air Filter - Furnace Filter (MERV 11)
ONLY: $19.27 each - FREE SHIPPING + SAVE When You Order More
12x24x4 (11.38 x 23.38 x 3.75) Accumulair Platinum 4-Inch Filter (MERV 11) 12x24x4 (11.38 x 23.38 x 3.75) Air Filter - Furnace Filter (MERV 11)
ONLY: $19.27 each - FREE SHIPPING + SAVE When You Order More
12x25x4 (11.5 x 24.5 x 3.75) Accumulair Platinum 4-Inch Filter (MERV 11) 12x25x4 (11.5 x 24.5 x 3.75) Air Filter - Furnace Filter (MERV 11)
ONLY: $17.13 each - FREE SHIPPING + SAVE When You Order More
12x26.5x4 (Actual Size) Accumulair Platinum 4-Inch Filter (MERV 11) 12x26.5x4 (Actual Size) Air Filter - Furnace Filter (MERV 11)
ONLY: $20.34 each - FREE SHIPPING + SAVE When You Order More
12x27x4 (11.5 x 26.5 x 3.75) Accumulair Platinum 4-Inch Filter (MERV 11) 12x27x4 (11.5 x 26.5 x 3.75) Air Filter - Furnace Filter (MERV 11)
ONLY: $20.34 each - FREE SHIPPING + SAVE When You Order More
12x27x4 (Actual Size) Accumulair Platinum 4-Inch Filter (MERV 11) 12x27x4 (Actual Size) Air Filter - Furnace Filter (MERV 11)
ONLY: $20.34 each - FREE SHIPPING + SAVE When You Order More
12x30.5x4 (Actual Size) Accumulair Platinum 4-Inch Filter (MERV 11) 12x30.5x4 (Actual Size) Air Filter - Furnace Filter (MERV 11)
ONLY: $27.84 each - FREE SHIPPING + SAVE When You Order More
12x30x4 (11.5 x 29.5 x 3.75) Accumulair Platinum 4-Inch Filter (MERV 11) 12x30x4 (11.5 x 29.5 x 3.75) Air Filter - Furnace Filter (MERV 11)
ONLY: $20.34 each - FREE SHIPPING + SAVE When You Order More
12x30x4 (Actual Size) Accumulair Platinum 4-Inch Filter (MERV 11) 12x30x4 (Actual Size) Air Filter - Furnace Filter (MERV 11)
ONLY: $24.62 each - FREE SHIPPING + SAVE When You Order More
12x36x4 (11.5 x 35.5 x 3.75) Accumulair Platinum 4-Inch Filter (MERV 11) 12x36x4 (11.5 x 35.5 x 3.75) Air Filter - Furnace Filter (MERV 11)
ONLY: $25.69 each - FREE SHIPPING + SAVE When You Order More
12x36x4 (Actual Size) Accumulair Platinum 4-Inch Filter (MERV 11) 12x36x4 (Actual Size) Air Filter - Furnace Filter (MERV 11)
ONLY: $25.69 each - FREE SHIPPING + SAVE When You Order More
13.25x13.25x4 (Actual Size) Accumulair Platinum 4-Inch Filter (MERV 11) 13.25x13.25x4 (Actual Size) Air Filter - Furnace Filter (MERV 11)
ONLY: $14.98 each - FREE SHIPPING + SAVE When You Order More
13x18x4 (Actual Size) Accumulair Platinum 4-Inch Filter (MERV 11) 13x18x4 (Actual Size) Air Filter - Furnace Filter (MERV 11)
ONLY: $17.13 each - FREE SHIPPING + SAVE When You Order More
13x20x4 (Actual Size) Accumulair Platinum 4-Inch Filter (MERV 11) 13x20x4 (Actual Size) Air Filter - Furnace Filter (MERV 11)
ONLY: $17.13 each - FREE SHIPPING + SAVE When You Order More
13x21.5x4 (Actual Size) Accumulair Platinum 4-Inch Filter (MERV 11) 13x21.5x4 (Actual Size) Air Filter - Furnace Filter (MERV 11)
ONLY: $17.13 each - FREE SHIPPING + SAVE When You Order More
13x21x4 (Actual Size) Accumulair Platinum 4-Inch Filter (MERV 11) 13x21x4 (Actual Size) Air Filter - Furnace Filter (MERV 11)
ONLY: $17.13 each - FREE SHIPPING + SAVE When You Order More
13x24x4 (Actual Size) Accumulair Platinum 4-Inch Filter (MERV 11) 13x24x4 (Actual Size) Air Filter - Furnace Filter (MERV 11)
ONLY: $19.27 each - FREE SHIPPING + SAVE When You Order More
14.5x19x4 (Actual Size) Accumulair Platinum 4-Inch Filter (MERV 11) 14.5x19x4 (Actual Size) Air Filter - Furnace Filter (MERV 11)
ONLY: $17.13 each - FREE SHIPPING + SAVE When You Order More
14x14x4 (13.5 x 13.5 x 3.75) Accumulair Platinum 4-Inch Filter (MERV 11) 14x14x4 (13.5 x 13.5 x 3.75) Air Filter - Furnace Filter (MERV 11)
ONLY: $14.98 each - FREE SHIPPING + SAVE When You Order More
14x18x4 (13.5 x 17.5 x 3.75) Accumulair Platinum 4-Inch Filter (MERV 11) 14x18x4 (13.5 x 17.5 x 3.75) Air Filter - Furnace Filter (MERV 11)
ONLY: $17.13 each - FREE SHIPPING + SAVE When You Order More
14x18x4 (Actual Size) Accumulair Platinum 4-Inch Filter (MERV 11) 14x18x4 (Actual Size) Air Filter - Furnace Filter (MERV 11)
ONLY: $17.13 each - FREE SHIPPING + SAVE When You Order More
14x20x4 (13.5 x 19.5 x 3.75) Accumulair Platinum 4-Inch Filter (MERV 11) 14x20x4 (13.5 x 19.5 x 3.75) Air Filter - Furnace Filter (MERV 11)
ONLY: $20.34 each - FREE SHIPPING + SAVE When You Order More
14x22x4 (Actual Size) Accumulair Platinum 4-Inch Filter (MERV 11) 14x22x4 (Actual Size) Air Filter - Furnace Filter (MERV 11)
ONLY: $20.34 each - FREE SHIPPING + SAVE When You Order More
14x24x4 (13.5 x 23.5 x 3.75) Accumulair Platinum 4-Inch Filter (MERV 11) 14x24x4 (13.5 x 23.5 x 3.75) Air Filter - Furnace Filter (MERV 11)
ONLY: $20.34 each - FREE SHIPPING + SAVE When You Order More
14x25x4 (13.5 x 24.5 x 3.75) Accumulair Platinum 4-Inch Filter (MERV 11) 14x25x4 (13.5 x 24.5 x 3.75) Air Filter - Furnace Filter (MERV 11)
ONLY: $20.34 each - FREE SHIPPING + SAVE When You Order More
14x27x4 (Actual Size) Accumulair Platinum 4-Inch Filter (MERV 11) 14x27x4 (Actual Size) Air Filter - Furnace Filter (MERV 11)
ONLY: $20.34 each - FREE SHIPPING + SAVE When You Order More
14x28x4 (Actual Size) Accumulair Platinum 4-Inch Filter (MERV 11) 14x28x4 (Actual Size) Air Filter - Furnace Filter (MERV 11)
ONLY: $20.34 each - FREE SHIPPING + SAVE When You Order More
14x30x4 (13.5 x 29.5 x 3.75) Accumulair Platinum 4-Inch Filter (MERV 11) 14x30x4 (13.5 x 29.5 x 3.75) Air Filter - Furnace Filter (MERV 11)
ONLY: $20.34 each - FREE SHIPPING + SAVE When You Order More
14x36x4 (13.5 x 35.5 x 3.75) Accumulair Platinum 4-Inch Filter (MERV 11) 14x36x4 (13.5 x 35.5 x 3.75) Air Filter - Furnace Filter (MERV 11)
ONLY: $25.69 each - FREE SHIPPING + SAVE When You Order More
14x36x4 (Actual Size) Accumulair Platinum 4-Inch Filter (MERV 11) 14x36x4 (Actual Size) Air Filter - Furnace Filter (MERV 11)
ONLY: $25.69 each - FREE SHIPPING + SAVE When You Order More
15.25x15.25x4 (Actual Size) Accumulair Platinum 4-Inch Filter (MERV 11) 15.25x15.25x4 (Actual Size) Air Filter - Furnace Filter (MERV 11)
ONLY: $17.13 each - FREE SHIPPING + SAVE When You Order More
15x15x4 (Actual Size) Accumulair Platinum 4-Inch Filter (MERV 11) 15x15x4 (Actual Size) Air Filter - Furnace Filter (MERV 11)
ONLY: $17.13 each - FREE SHIPPING + SAVE When You Order More
15x20x4 (14.5 x 19.5 x 3.75) Accumulair Platinum 4-Inch Filter (MERV 11) 15x20x4 (14.5 x 19.5 x 3.75) Air Filter - Furnace Filter (MERV 11)
ONLY: $17.13 each - FREE SHIPPING + SAVE When You Order More
15x25x4 (14.5 x 24.5 x 3.75) Accumulair Platinum 4-Inch Filter (MERV 11) 15x25x4 (14.5 x 24.5 x 3.75) Air Filter - Furnace Filter (MERV 11)
ONLY: $20.34 each - FREE SHIPPING + SAVE When You Order More
15x25x4 (Actual Size) Accumulair Platinum 4-Inch Filter (MERV 11) 15x25x4 (Actual Size) Air Filter - Furnace Filter (MERV 11)
ONLY: $20.34 each - FREE SHIPPING + SAVE When You Order More
15x30.5x4 (Actual Size) Accumulair Platinum 4-Inch Filter (MERV 11) 15x30.5x4 (Actual Size) Air Filter - Furnace Filter (MERV 11)
ONLY: $27.84 each - FREE SHIPPING + SAVE When You Order More
15x30.75x4 (Actual Size) Accumulair Platinum 4-Inch Filter (MERV 11) 15x30.75x4 (Actual Size) Air Filter - Furnace Filter (MERV 11)
ONLY: $25.69 each - FREE SHIPPING + SAVE When You Order More
15x30x4 (14.5 x 29.5 x 3.75) Accumulair Platinum 4-Inch Filter (MERV 11) 15x30x4 (14.5 x 29.5 x 3.75) Air Filter - Furnace Filter (MERV 11)
ONLY: $21.41 each - FREE SHIPPING + SAVE When You Order More
16.25x21.25x4 (Actual Size) Accumulair Platinum 4-Inch Filter (MERV 11) 16.25x21.25x4 (Actual Size) Air Filter - Furnace Filter (MERV 11)
ONLY: $20.34 each - FREE SHIPPING + SAVE When You Order More
16.25x21x4 (Actual Size) Accumulair Platinum 4-Inch Filter (MERV 11) 16.25x21x4 (Actual Size) Air Filter - Furnace Filter (MERV 11)
ONLY: $20.34 each - FREE SHIPPING + SAVE When You Order More
16.38x21.38x4 (Actual Size) Accumulair Platinum 4-Inch Filter (MERV 11) 16.38x21.38x4 (Actual Size) Air Filter - Furnace Filter (MERV 11)
ONLY: $20.34 each - FREE SHIPPING + SAVE When You Order More
16.5x21x4 (Actual Size) Accumulair Platinum 4-Inch Filter (MERV 11) 16.5x21x4 (Actual Size) Air Filter - Furnace Filter (MERV 11)
ONLY: $20.34 each - FREE SHIPPING + SAVE When You Order More
16.5x22x4 (Actual Size) Accumulair Platinum 4-Inch Filter (MERV 11) 16.5x22x4 (Actual Size) Air Filter - Furnace Filter (MERV 11)
ONLY: $20.34 each - FREE SHIPPING + SAVE When You Order More
16x16x4 (15.5 x 15.5 x 3.75) Accumulair Platinum 4-Inch Filter (MERV 11) 16x16x4 (15.5 x 15.5 x 3.75) Air Filter - Furnace Filter (MERV 11)
ONLY: $17.13 each - FREE SHIPPING + SAVE When You Order More
16x18x4 (Actual Size) Accumulair Platinum 4-Inch Filter (MERV 11) 16x18x4 (Actual Size) Air Filter - Furnace Filter (MERV 11)
ONLY: $17.13 each - FREE SHIPPING + SAVE When You Order More
16x20x4 (15.5 x 19.5 x 3.75) Accumulair Platinum 4-Inch Filter (MERV 11) 16x20x4 (15.5 x 19.5 x 3.75) Air Filter - Furnace Filter (MERV 11)
ONLY: $19.27 each - FREE SHIPPING + SAVE When You Order More
16x21.5x4 (Actual Size) Accumulair Platinum 4-Inch Filter (MERV 11) 16x21.5x4 (Actual Size) Air Filter - Furnace Filter (MERV 11)
ONLY: $20.34 each - FREE SHIPPING + SAVE When You Order More
16x21x4 (Actual Size) Accumulair Platinum 4-Inch Filter (MERV 11) 16x21x4 (Actual Size) Air Filter - Furnace Filter (MERV 11)
ONLY: $20.34 each - FREE SHIPPING + SAVE When You Order More
16x22.25x4 (Actual Size) Accumulair Platinum 4-Inch Filter (MERV 11) 16x22.25x4 (Actual Size) Air Filter - Furnace Filter (MERV 11)
ONLY: $20.34 each - FREE SHIPPING + SAVE When You Order More
16x22x4 (Actual Size) Accumulair Platinum 4-Inch Filter (MERV 11) 16x22x4 (Actual Size) Air Filter - Furnace Filter (MERV 11)
ONLY: $20.34 each - FREE SHIPPING + SAVE When You Order More
16x24x4 (15.5 x 23.5 x 3.75) Accumulair Platinum 4-Inch Filter (MERV 11) 16x24x4 (15.5 x 23.5 x 3.75) Air Filter - Furnace Filter (MERV 11)
ONLY: $20.34 each - FREE SHIPPING + SAVE When You Order More
16x25x4 (15.5 x 24.5 x 3.75) Accumulair Platinum 4-Inch Filter (MERV 11) 16x25x4 (155 x 245 x 375) Air Filter - Furnace Filter (MERV 11)
ONLY: $19.27 each - FREE SHIPPING + SAVE When You Order More
16x30x4 (15.5 x 29.5 x 3.75) Accumulair Platinum 4-Inch Filter (MERV 11) 16x30x4 (15.5 x 29.5 x 3.75) Air Filter - Furnace Filter (MERV 11)
ONLY: $25.69 each - FREE SHIPPING + SAVE When You Order More
16x32x4 (15.75 x 31.75 x 3.75) Accumulair Platinum 4-Inch Filter (MERV 11) 16x32x4 (15.75 x 31.75 x 3.75) Air Filter - Furnace Filter (MERV 11)
ONLY: $25.69 each - FREE SHIPPING + SAVE When You Order More
16x36x4 (15.5 x 35.5 x 3.75) Accumulair Platinum 4-Inch Filter (MERV 11) 16x36x4 (15.5 x 35.5 x 3.75) Air Filter - Furnace Filter (MERV 11)
ONLY: $25.69 each - FREE SHIPPING + SAVE When You Order More
16x36x4 (Actual Size) Accumulair Platinum 4-Inch Filter (MERV 11) 16x36x4 (Actual Size) Air Filter - Furnace Filter (MERV 11)
ONLY: $25.69 each - FREE SHIPPING + SAVE When You Order More
17.25x17.25x4 (Actual Size) Accumulair Platinum 4-Inch Filter (MERV 11) 17.25x17.25x4 (Actual Size) Air Filter - Furnace Filter (MERV 11)
ONLY: $21.41 each - FREE SHIPPING + SAVE When You Order More
17.25x19.25x4 (Actual Size) Accumulair Platinum 4-Inch Filter (MERV 11) 17.25x19.25x4 (Actual Size) Air Filter - Furnace Filter (MERV 11)
ONLY: $21.41 each - FREE SHIPPING + SAVE When You Order More
17.25x23.25x4 (Actual Size) Accumulair Platinum 4-Inch Filter (MERV 11) 17.25x23.25x4 (Actual Size) Air Filter - Furnace Filter (MERV 11)
ONLY: $21.41 each - FREE SHIPPING + SAVE When You Order More
17.25x26x4 (Actual Size) Accumulair Platinum 4-Inch Filter (MERV 11) 17.25x26x4 (Actual Size) Air Filter - Furnace Filter (MERV 11)
ONLY: $21.41 each - FREE SHIPPING + SAVE When You Order More
17.25x29.25x4 (Actual Size) Accumulair Platinum 4-Inch Filter (MERV 11) 17.25x29.25x4 (Actual Size) Air Filter - Furnace Filter (MERV 11)
ONLY: $21.41 each - FREE SHIPPING + SAVE When You Order More
17.25x35.25x4 (Actual Size) Accumulair Platinum 4-Inch Filter (MERV 11) 17.25x35.25x4 (Actual Size) Air Filter - Furnace Filter (MERV 11)
ONLY: $32.12 each - FREE SHIPPING + SAVE When You Order More
17.5x23.5x4 (17.1 x 23.1 x 3.75) Accumulair Platinum 4-Inch Filter (MERV 11) 17.5x23.5x4 (17.1 x 23.1 x 3.75) Air Filter - Furnace Filter (MERV 11)
ONLY: $20.34 each - FREE SHIPPING + SAVE When You Order More
17.5x27x4 (Actual Size) Accumulair Platinum 4-Inch Filter (MERV 11) 17.5x27x4 (Actual Size) Air Filter - Furnace Filter (MERV 11)
ONLY: $21.41 each - FREE SHIPPING + SAVE When You Order More
17x17x4 (Actual Size) Accumulair Platinum 4-Inch Filter (MERV 11) 17x17x4 (Actual Size) Air Filter - Furnace Filter (MERV 11)
ONLY: $17.13 each - FREE SHIPPING + SAVE When You Order More
17x19x4 (Actual Size) Accumulair Platinum 4-Inch Filter (MERV 11) 17x19x4 (Actual Size) Air Filter - Furnace Filter (MERV 11)
ONLY: $20.34 each - FREE SHIPPING + SAVE When You Order More
17x20x4 (16.5 x 19.5 x 3.75) Accumulair Platinum 4-Inch Filter (MERV 11) 17x20x4 (16.5 x 19.5 x 3.75) Air Filter - Furnace Filter (MERV 11)
ONLY: $20.34 each - FREE SHIPPING + SAVE When You Order More
17x21x4 (Actual Size) Accumulair Platinum 4-Inch Filter (MERV 11) 17x21x4 (Actual Size) Air Filter - Furnace Filter (MERV 11)
ONLY: $20.34 each - FREE SHIPPING + SAVE When You Order More
17x22x4 (16.5 x 21.5 x 3.75) Accumulair Platinum 4-Inch Filter (MERV 11) 17x22x4 (16.5 x 21.5 x 3.75) Air Filter - Furnace Filter (MERV 11)
ONLY: $20.34 each - FREE SHIPPING + SAVE When You Order More
17x25x4 (16.5 x 24.5 x 3.75) Accumulair Platinum 4-Inch Filter (MERV 11) 17x25x4 (16.5 x 24.5 x 3.75) Air Filter - Furnace Filter (MERV 11)
ONLY: $21.41 each - FREE SHIPPING + SAVE When You Order More
17x25x4 (Actual Size) Accumulair Platinum 4-Inch Filter (MERV 11) 17x25x4 (Actual Size) Air Filter - Furnace Filter (MERV 11)
ONLY: $21.41 each - FREE SHIPPING + SAVE When You Order More
18.25x22x4 (Actual Size) Accumulair Platinum 2-Inch Filter (MERV 11) 18.25x22x4 (Actual Size) Air Filter - Furnace Filter (MERV 11)
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18x18x4 (17.5 x 17.5 x 3.75) Accumulair Platinum 4-Inch Filter (MERV 11) 18x18x4 (17.5 x 17.5 x 3.75) Air Filter - Furnace Filter (MERV 11)
ONLY: $20.34 each - FREE SHIPPING + SAVE When You Order More
18x18x4 (Actual Size) Accumulair Platinum 4-Inch Filter (MERV 11) 18x18x4 (Actual Size) Air Filter - Furnace Filter (MERV 11)
ONLY: $20.34 each - FREE SHIPPING + SAVE When You Order More
18x20x4 (17.5 x 19.5 x 3.75) Accumulair Platinum 4-Inch Filter (MERV 11) 18x20x4 (17.5 x 19.5 x 3.75) Air Filter - Furnace Filter (MERV 11)
ONLY: $20.34 each - FREE SHIPPING + SAVE When You Order More
18x20x4 (Actual Size) Accumulair Platinum 4-Inch Filter (MERV 11) 18x20x4 (Actual Size) Air Filter - Furnace Filter (MERV 11)
ONLY: $20.34 each - FREE SHIPPING + SAVE When You Order More
18x22x4 (17.5 x 21.5 x 3.75) Accumulair Platinum 4-Inch Filter (MERV 11) 18x22x4 (17.5 x 21.5 x 3.75) Air Filter - Furnace Filter (MERV 11)
ONLY: $20.34 each - FREE SHIPPING + SAVE When You Order More
18x24x4 (17.5 x 23.5 x 3.75) Accumulair Platinum 4-Inch Filter (MERV 11) 18x24x4 (17.5 x 23.5 x 3.75) Air Filter - Furnace Filter (MERV 11)
ONLY: $19.27 each - FREE SHIPPING + SAVE When You Order More
18x25x4 (17.5 x 24.5 x 3.75) Accumulair Platinum 4-Inch Filter (MERV 11) 18x25x4 (17.5 x 24.5 x 3.75) Air Filter - Furnace Filter (MERV 11)
ONLY: $21.41 each - FREE SHIPPING + SAVE When You Order More
18x30x4 (17.5 x 29.5 x 3.75) Accumulair Platinum 4-Inch Filter (MERV 11) 18x30x4 (17.5 x 29.5 x 3.75) Air Filter - Furnace Filter (MERV 11)
ONLY: $21.41 each - FREE SHIPPING + SAVE When You Order More
18x36x4 (17.5 x 35.5 x 3.75) Accumulair Platinum 4-Inch Filter (MERV 11) 18x36x4 (17.5 x 35.5 x 3.75) Air Filter - Furnace Filter (MERV 11)
ONLY: $32.12 each - FREE SHIPPING + SAVE When You Order More
18x36x4 (Actual Size) Accumulair Platinum 4-Inch Filter (MERV 11) 18x36x4 (Actual Size) Air Filter - Furnace Filter (MERV 11)
ONLY: $32.12 each - FREE SHIPPING + SAVE When You Order More
19.25x21.25x4 (Actual Size) Accumulair Platinum 4-Inch Filter (MERV 11) 19.25x21.25x4 (Actual Size) Air Filter - Furnace Filter (MERV 11)
ONLY: $21.41 each - FREE SHIPPING + SAVE When You Order More
19.25x23.25x4 (Actual Size) Accumulair Platinum 4-Inch Filter (MERV 11) 19.25x23.25x4 (Actual Size) Air Filter - Furnace Filter (MERV 11)
ONLY: $21.41 each - FREE SHIPPING + SAVE When You Order More
19.5x21x4 (Actual Size) Accumulair Platinum 4-Inch Filter (MERV 11) 19.5x21x4 (Actual Size) Air Filter - Furnace Filter (MERV 11)
ONLY: $21.41 each - FREE SHIPPING + SAVE When You Order More
19.5x22x4 (Actual Size) Accumulair Platinum 4-Inch Filter (MERV 11) 19.5x22x4 (Actual Size) Air Filter - Furnace Filter (MERV 11)
ONLY: $21.41 each - FREE SHIPPING + SAVE When You Order More
19.75x21x4 (Actual Size) Accumulair Platinum 4-Inch Filter (MERV 11) 19.75x21x4 (Actual Size) Air Filter - Furnace Filter (MERV 11)
ONLY: $24.62 each - FREE SHIPPING + SAVE When You Order More
19.75x22x4 (Actual Size) Accumulair Platinum 4-Inch Filter (MERV 11) 19.75x22x4 (Actual Size) Air Filter - Furnace Filter (MERV 11)
ONLY: $24.62 each - FREE SHIPPING + SAVE When You Order More
19.88x21.5x4 (Actual Size) Accumulair Platinum 4-Inch Filter (MERV 11) 19.88x21.5x4 (Actual Size) Air Filter - Furnace Filter (MERV 11)
ONLY: $21.41 each - FREE SHIPPING + SAVE When You Order More
19x19x4 (Actual Size) Accumulair Platinum 4-Inch Filter (MERV 11) 19x19x4 (Actual Size) Air Filter - Furnace Filter (MERV 11)
ONLY: $20.34 each - FREE SHIPPING + SAVE When You Order More
19x21.5x4 (Actual Size) Accumulair Platinum 4-Inch Filter (MERV 11) 19x21.5x4 (Actual Size) Air Filter - Furnace Filter (MERV 11)
ONLY: $20.34 each - FREE SHIPPING + SAVE When You Order More
19x21x4 (18.5 x 20.5 x 3.75) Accumulair Platinum 4-Inch Filter (MERV 11) 19x21x4 (18.5 x 20.5 x 3.75) Air Filter - Furnace Filter (MERV 11)
ONLY: $20.34 each - FREE SHIPPING + SAVE When You Order More
19x21x4 (Actual Size) Accumulair Platinum 4-Inch Filter (MERV 11) 19x21x4 (Actual Size) Air Filter - Furnace Filter (MERV 11)
ONLY: $20.34 each - FREE SHIPPING + SAVE When You Order More
19x22x4 (Actual Size) Accumulair Platinum 4-Inch Filter (MERV 11) 19x22x4 (Actual Size) Air Filter - Furnace Filter (MERV 11)
ONLY: $21.41 each - FREE SHIPPING + SAVE When You Order More
19x23x4 (Actual Size) Accumulair Platinum 4-Inch Filter (MERV 11) 19x23x4 (Actual Size) Air Filter - Furnace Filter (MERV 11)
ONLY: $21.41 each - FREE SHIPPING + SAVE When You Order More
19x27x4 (Actual Size) Accumulair Platinum 4-Inch Filter (MERV 11) 19x27x4 (Actual Size) Air Filter - Furnace Filter (MERV 11)
ONLY: $21.41 each - FREE SHIPPING + SAVE When You Order More
20x20x4 (19.5 x 19.5 x 3.75) Accumulair Platinum 4-Inch Filter (MERV 11) 20x20x4 (19.5 x 19.5 x 3.75) Air Filter - Furnace Filter (MERV 11)
ONLY: $19.27 each - FREE SHIPPING + SAVE When You Order More
20x21.5x4 (Actual Size) Accumulair Platinum 4-Inch Filter (MERV 11) 20x21.5x4 (Actual Size) Air Filter - Furnace Filter (MERV 11)
ONLY: $24.62 each - FREE SHIPPING + SAVE When You Order More
20x21x4 (Actual Size) Accumulair Platinum 4-Inch Filter (MERV 11) 20x21x4 (Actual Size) Air Filter - Furnace Filter (MERV 11)
ONLY: $24.62 each - FREE SHIPPING + SAVE When You Order More
20x22x4 (19.5 x 21.5 x 3.75) Accumulair Platinum 4-Inch Filter (MERV 11) 20x22x4 (19.5 x 21.5 x 3.75) Air Filter - Furnace Filter (MERV 11)
ONLY: $24.62 each - FREE SHIPPING + SAVE When You Order More
20x22x4 (Actual Size) Accumulair Platinum 4-Inch Filter (MERV 11) 20x22x4 (Actual Size) Air Filter - Furnace Filter (MERV 11)
ONLY: $24.62 each - FREE SHIPPING + SAVE When You Order More
20x23x4 (19.5 x 22.5 x 3.75) Accumulair Platinum 4-Inch Filter (MERV 11) 20x23x4 (19.5 x 22.5 x 3.75) Air Filter - Furnace Filter (MERV 11)
ONLY: $24.62 each - FREE SHIPPING + SAVE When You Order More
20x23x4 (Actual Size) Accumulair Platinum 4-Inch Filter (MERV 11) 20x23x4 (Actual Size) Air Filter - Furnace Filter (MERV 11)
ONLY: $24.62 each - FREE SHIPPING + SAVE When You Order More
20x24x4 (19.5 x 23.5 x 3.75) Accumulair Platinum 4-Inch Filter (MERV 11) 20x24x4 (19.5 x 23.5 x 3.75) Air Filter - Furnace Filter (MERV 11)
ONLY: $19.27 each - FREE SHIPPING + SAVE When You Order More
20x25x4 (19.5 x 24.5 x 3.75) Accumulair Platinum 4-Inch Filter (MERV 11) 20x25x4 (19.5 x 24.5 x 3.75) Air Filter - Furnace Filter (MERV 11)
ONLY: $19.27 each - FREE SHIPPING + SAVE When You Order More
20x27x4 (Actual Size) Accumulair Platinum 4-Inch Filter (MERV 11) 20x27x4 (Actual Size) Air Filter - Furnace Filter (MERV 11)
ONLY: $24.62 each - FREE SHIPPING + SAVE When You Order More
20x30x4 (19.5 x 29.5 x 3.75) Accumulair Platinum 4-Inch Filter (MERV 11) 20x30x4 (19.5 x 29.5 x 3.75) Air Filter - Furnace Filter (MERV 11)
ONLY: $24.62 each - FREE SHIPPING + SAVE When You Order More
20x32x4 (Actual Size) Accumulair Platinum 4-Inch Filter (MERV 11) 20x32x4 (Actual Size) Air Filter - Furnace Filter (MERV 11)
ONLY: $32.12 each - FREE SHIPPING + SAVE When You Order More
20x34x4 (19.5 x 33.5 x 3.75) Accumulair Platinum 4-Inch Filter (MERV 11) 20x34x4 (19.5 x 33.5 x 3.75) Air Filter - Furnace Filter (MERV 11)
ONLY: $31.05 each - FREE SHIPPING + SAVE When You Order More
20x36x4 (19.5 x 35.5 x 3.75) Accumulair Platinum 4-Inch Filter (MERV 11) 20x36x4 (19.5 x 35.5 x 3.75) Air Filter - Furnace Filter (MERV 11)
ONLY: $32.12 each - FREE SHIPPING + SAVE When You Order More
20x36x4 (Actual Size) Accumulair Platinum 4-Inch Filter (MERV 11) 20x36x4 (Actual Size) Air Filter - Furnace Filter (MERV 11)
ONLY: $32.12 each - FREE SHIPPING + SAVE When You Order More
21.25x21.25x4 (Actual Size) Accumulair Platinum 4-Inch Filter (MERV 11) 21.25x21.25x4 (Actual Size) Air Filter - Furnace Filter (MERV 11)
ONLY: $24.62 each - FREE SHIPPING + SAVE When You Order More
21.5x23.25x4 (Actual Size) Accumulair Platinum 4-Inch Filter (MERV 11) 21.5x23.25x4 (Actual Size) Air Filter - Furnace Filter (MERV 11)
ONLY: $24.62 each - FREE SHIPPING + SAVE When You Order More
21.5x23x4 (Actual Size) Accumulair Platinum 4-Inch Filter (MERV 11) 21.5x23x4 (Actual Size) Air Filter - Furnace Filter (MERV 11)
ONLY: $25.69 each - FREE SHIPPING + SAVE When You Order More
21.5x24x4 (Actual Size) Accumulair Platinum 4-Inch Filter (MERV 11) 21.5x24x4 (Actual Size) Air Filter - Furnace Filter (MERV 11)
ONLY: $24.62 each - FREE SHIPPING + SAVE When You Order More
21.5x26x4 (Actual Size) Accumulair Platinum 4-Inch Filter (MERV 11) 21.5x26x4 (Actual Size) Air Filter - Furnace Filter (MERV 11)
ONLY: $24.62 each - FREE SHIPPING + SAVE When You Order More
21x21x4 (20.5x20.5x3.75) Accumulair Platinum 4-Inch Filter (MERV 11) 21x21x4 (20.5x20.5x3.75) Air Filter - Furnace Filter (MERV 11)
ONLY: $17.13 each - FREE SHIPPING + SAVE When You Order More
21x21x4 (Actual Size) Accumulair Platinum 4-Inch Filter (MERV 11) 21x21x4 (Actual Size) Air Filter - Furnace Filter (MERV 11)
ONLY: $17.13 each - FREE SHIPPING + SAVE When You Order More
21x22x4 (20.5 x 21.5 x 3.75) Accumulair Platinum 4-Inch Filter (MERV 11) 21x22x4 (20.5 x 21.5 x 3.75) Air Filter - Furnace Filter (MERV 11)
ONLY: $24.62 each - FREE SHIPPING + SAVE When You Order More
21x22x4 (Actual Size) Accumulair Platinum 4-Inch Filter (MERV 11) 21x22x4 (Actual Size) Air Filter - Furnace Filter (MERV 11)
ONLY: $24.62 each - FREE SHIPPING + SAVE When You Order More
21x23.25x4 (Actual Size) Accumulair Platinum 4-Inch Filter (MERV 11) 21x23.25x4 (Actual Size) Air Filter - Furnace Filter (MERV 11)
ONLY: $24.62 each - FREE SHIPPING + SAVE When You Order More
21x23x4 (Actual Size) Accumulair Platinum 4-Inch Filter (MERV 11) 21x23x4 (Actual Size) Air Filter - Furnace Filter (MERV 11)
ONLY: $24.62 each - FREE SHIPPING + SAVE When You Order More
22.25x25x4 (Actual Size) Accumulair Platinum 4-Inch Filter (MERV 11) 22.25x25x4 (Actual Size) Air Filter - Furnace Filter (MERV 11)
ONLY: $24.62 each - FREE SHIPPING + SAVE When You Order More
22x22x4 (21.5 x 21.5 x 3.75) Accumulair Platinum 4-Inch Filter (MERV 11) 22x22x4 (21.5 x 21.5 x 3.75) Air Filter - Furnace Filter (MERV 11)
ONLY: $24.62 each - FREE SHIPPING + SAVE When You Order More
22x22x4 (Actual Size) Accumulair Platinum 4-Inch Filter (MERV 11) 22x22x4 (Actual Size) Air Filter - Furnace Filter (MERV 11)
ONLY: $24.62 each - FREE SHIPPING + SAVE When You Order More
22x24x4 (21.5 x 23.5 x 3.75) Accumulair Platinum 4-Inch Filter (MERV 11) 22x24x4 (21.5 x 23.5 x 3.75) Air Filter - Furnace Filter (MERV 11)
ONLY: $24.62 each - FREE SHIPPING + SAVE When You Order More
22x24x4 (Actual Size) Accumulair Platinum 4-Inch Filter (MERV 11) 22x24x4 (Actual Size) Air Filter - Furnace Filter (MERV 11)
ONLY: $24.62 each - FREE SHIPPING + SAVE When You Order More
22x26x4 (21.5x25.5x3.75) Accumulair Platinum 4-Inch Filter (MERV 11) 22x26x4 (21.5x25.5x3.75) Air Filter - Furnace Filter (MERV 11)
ONLY: $24.62 each - FREE SHIPPING + SAVE When You Order More
22x26x4 (Actual Size) Accumulair Platinum 4-Inch Filter (MERV 11) 22x26x4 (Actual Size) Air Filter - Furnace Filter (MERV 11)
ONLY: $24.62 each - FREE SHIPPING + SAVE When You Order More
22x28x4 (Actual Size) Accumulair Platinum 4-Inch Filter (MERV 11) 22x28x4 (Actual Size) Air Filter - Furnace Filter (MERV 11)
ONLY: $25.69 each - FREE SHIPPING + SAVE When You Order More
22x36x4 (21.5 x 35.5 x 3.75) Accumulair Platinum 4-Inch Filter (MERV 11) 22x36x4 (21.5 x 35.5 x 3.75) Air Filter - Furnace Filter (MERV 11)
ONLY: $32.12 each - FREE SHIPPING + SAVE When You Order More
23.25x29.25x4 (Actual Size) Accumulair Platinum 4-Inch Filter (MERV 11) 23.25x29.25x4 (Actual Size) Air Filter - Furnace Filter (MERV 11)
ONLY: $24.62 each - FREE SHIPPING + SAVE When You Order More
23.5x23.5x4 (23.1 x 23.1 x 3.75) Accumulair Platinum 4-Inch Filter (MERV 11) 23.5x23.5x4 (23.1 x 23.1 x 3.75) Air Filter - Furnace Filter (MERV 11)
ONLY: $24.62 each - FREE SHIPPING + SAVE When You Order More
23.5x25x4 (Actual Size) Accumulair Platinum 4-Inch Filter (MERV 11) 23.5x25x4 (Actual Size) Air Filter - Furnace Filter (MERV 11)
ONLY: $24.62 each - FREE SHIPPING + SAVE When You Order More
23x25x4 (Actual Size) Accumulair Platinum 4-Inch Filter (MERV 11) 23x25x4 (Actual Size) Air Filter - Furnace Filter (MERV 11)
ONLY: $24.62 each - FREE SHIPPING + SAVE When You Order More
24x24x4 (23.75 x 23.75 x 3.75) Accumulair Platinum 4-Inch Filter (MERV 11) 24x24x4 (23.75 x 23.75 x 3.75) Air Filter - Furnace Filter (MERV 11)
ONLY: $22.48 each - FREE SHIPPING + SAVE When You Order More
24x24x4 (23.38 x 23.38 x 3.75) Accumulair Platinum 4-Inch Filter (MERV 11) 24x24x4 (23.38 x 23.38 x 3.75) Air Filter - Furnace Filter (MERV 11)
ONLY: $22.48 each - FREE SHIPPING + SAVE When You Order More
24x25x4 (23.5 x 24.5 x 3.75) Accumulair Platinum 4-Inch Filter (MERV 11) 24x25x4 (23.5 x 24.5 x 3.75) Air Filter - Furnace Filter (MERV 11)
ONLY: $25.69 each - FREE SHIPPING + SAVE When You Order More
24x25x4 (Actual Size) Accumulair Platinum 4-Inch Filter (MERV 11) 24x25x4 (Actual Size) Air Filter - Furnace Filter (MERV 11)
ONLY: $25.69 each - FREE SHIPPING + SAVE When You Order More
24x28x4 (Actual Size) Accumulair Platinum 4-Inch Filter (MERV 11) 24x28x4 (Actual Size) Air Filter - Furnace Filter (MERV 11)
ONLY: $25.69 each - FREE SHIPPING + SAVE When You Order More
24x30x4 (23.5 x 29.5 x 3.75) Accumulair Platinum 4-Inch Filter (MERV 11) 24x30x4 (23.5 x 29.5 x 3.75) Air Filter - Furnace Filter (MERV 11)
ONLY: $25.69 each - FREE SHIPPING + SAVE When You Order More
24x36x4 (23.5 x 35.5 x 3.75) Accumulair Platinum 4-Inch Filter (MERV 11) 24x36x4 (23.5 x 35.5 x 3.75) Air Filter - Furnace Filter (MERV 11)
ONLY: $33.19 each - FREE SHIPPING + SAVE When You Order More
24x36x4 (Actual Size) Accumulair Platinum 4-Inch Filter (MERV 11) 24x36x4 (Actual Size) Air Filter - Furnace Filter (MERV 11)
ONLY: $33.19 each - FREE SHIPPING + SAVE When You Order More
25x25x4 (24.5 x 24.5 x 3.75) Accumulair Platinum 4-Inch Filter (MERV 11) 25x25x4 (24.5 x 24.5 x 3.75) Air Filter - Furnace Filter (MERV 11)
ONLY: $25.69 each - FREE SHIPPING + SAVE When You Order More
25x25x4 (24.75 x 24.75 x 3.75) Accumulair Platinum 4-Inch Filter (MERV 11) 25x25x4 (24.75 x 24.75 x 3.75) Air Filter - Furnace Filter (MERV 11)
ONLY: $28.91 each - FREE SHIPPING + SAVE When You Order More
25x28x4 (24.5 x 27.5 x 3.75) Accumulair Platinum 4-Inch Filter (MERV 11) 25x28x4 (24.5 x 27.5 x 3.75) Air Filter - Furnace Filter (MERV 11)
ONLY: $26.76 each - FREE SHIPPING + SAVE When You Order More
25x28x4 (Actual Size) Accumulair Platinum 4-Inch Filter (MERV 11) 25x28x4 (Actual Size) Air Filter - Furnace Filter (MERV 11)
ONLY: $26.76 each - FREE SHIPPING + SAVE When You Order More
25x29x4 (24.5 x 28.5 x 3.75) Accumulair Platinum 4-Inch Filter (MERV 11) 25x29x4 (24.5 x 28.5 x 3.75) Air Filter - Furnace Filter (MERV 11)
ONLY: $27.84 each - FREE SHIPPING + SAVE When You Order More
25x32x4 (24.5 x 31.5 x 3.75) Accumulair Platinum 4-Inch Filter (MERV 11) 25x32x4 (24.5 x 31.5 x 3.75) Air Filter - Furnace Filter (MERV 11)
ONLY: $34.26 each - FREE SHIPPING + SAVE When You Order More
25x32x4 (Actual Size) Accumulair Platinum 4-Inch Filter (MERV 11) 25x32x4 (Actual Size) Air Filter - Furnace Filter (MERV 11)
ONLY: $34.26 each - FREE SHIPPING + SAVE When You Order More
27x27x4 (26.5 x 26.5 x 3.75) Accumulair Platinum 4-Inch Filter (MERV 11) 27x27x4 (26.5 x 26.5 x 3.75) Air Filter - Furnace Filter (MERV 11)
ONLY: $26.76 each - FREE SHIPPING + SAVE When You Order More
28x30x4 (27.5 x 29.5 x 3.75) Accumulair Platinum 4-Inch Filter (MERV 11) 28x30x4 (27.5 x 29.5 x 3.75) Air Filter - Furnace Filter (MERV 11)
ONLY: $31.05 each - FREE SHIPPING + SAVE When You Order More
29x29x4 (28.5 x 28.5 x 3.75) Accumulair Platinum 4-Inch Filter (MERV 11) 29x29x4 (28.5 x 28.5 x 3.75) Air Filter - Furnace Filter (MERV 11)
ONLY: $26.76 each - FREE SHIPPING + SAVE When You Order More
30x30x4 (29.5 x 29.5 x 3.75) Accumulair Platinum 4-Inch Filter (MERV 11) 30x30x4 (29.5 x 29.5 x 3.75) Air Filter - Furnace Filter (MERV 11)
ONLY: $26.76 each - FREE SHIPPING + SAVE When You Order More
30x30x4 (Actual Size) Accumulair Platinum 4-Inch Filter (MERV 11) 30x30x4 (Actual Size) Air Filter - Furnace Filter (MERV 11)
ONLY: $33.19 each - FREE SHIPPING + SAVE When You Order More
30x36x4 (29.5 x 35.5 x 3.75) Accumulair Platinum 4-Inch Filter (MERV 11) 30x36x4 (29.5 x 35.5 x 3.75) Air Filter - Furnace Filter (MERV 11)
ONLY: $44.97 each - FREE SHIPPING + SAVE When You Order More
19.75 x 24.75 x 4 Custom-Made MERV 11 Filter 19.75 x 24.75 x 4 Custom-Made MERV 11 Filter
ONLY: $22.48 each - FREE SHIPPING + SAVE When You Order More
11.75 x 12.5 x 2 Custom-Made MERV 11 Filter 11.75 x 12.5 x 2 Custom-Made MERV 11 Filter
ONLY: $13.45 each - FREE SHIPPING + SAVE When You Order More
7.75 x 15.75 Custom-Made MERV 11 Filter 7.75 x 15.75 Custom-Made MERV 11 Filter
ONLY: $14.50 each - FREE SHIPPING + SAVE When You Order More
17.625 x 35.625 x 1 Custom-Made MERV 11 Filter 17.625 x 35.625 x 1 Custom-Made MERV 11 Filter
ONLY: $19.95 each - FREE SHIPPING + SAVE When You Order More
29 x 35.5 x 2 Custom-Made MERV 11 Filter 29 x 35.5 x 2 Custom-Made MERV 11 Filter
ONLY: $33.97 each - FREE SHIPPING + SAVE When You Order More
11 x 25 x 1 Custom-Made MERV 8 Filter (Please see note below) 11 x 25 x 1 Custom-Made MERV 8 Filter (Please see note below)
ONLY: $11.95 each - FREE SHIPPING + SAVE When You Order More
16 x 25 x 2 Custom-Made MERV 8 Filter (Please see note below) 16 x 25 x 2 Custom-Made MERV 8 Filter (Please see note below)
ONLY: $13.95 each - FREE SHIPPING + SAVE When You Order More
16 x 20 x 1 Custom-Made MERV 8 Filter (Please see note below) 16 x 20 x 1 Custom-Made MERV 8 Filter (Please see note below)
ONLY: $12.95 each - FREE SHIPPING + SAVE When You Order More
7 x 21.5 x 1 Custom-Made MERV 8 Filter (Please see note below) 7 x 21.5 x 1 Custom-Made MERV 8 Filter (Please see note below)
ONLY: $11.95 each - FREE SHIPPING + SAVE When You Order More
19" x 20-3/4" x 1/2" Custom-Made MERV 11 Filter 19" x 20-3/4" x 1/2" Custom-Made MERV 11 Filter
ONLY: $17.23 each - FREE SHIPPING + SAVE When You Order More
12" x 20-3/4" x 1/2" Custom-Made MERV 11 Filter 12" x 20-3/4" x 1/2" Custom-Made MERV 11 Filter
ONLY: $17.23 each - FREE SHIPPING + SAVE When You Order More
16 x 25 x 1 Custom-Made MERV 11 Filter 16 x 25 x 1 Custom-Made MERV 11 Filter
ONLY: $16.95 each - FREE SHIPPING + SAVE When You Order More
11.25 x 23.25 x .05 Custom-Made MERV 8 Filter (Please see note below) 11.25 x 23.25 x .05 Custom-Made MERV 8 Filter (Please see note below)
ONLY: $9.46 each - FREE SHIPPING + SAVE When You Order More
30x36x4 (Actual Size) Accumulair Platinum 4-Inch Filter (MERV 11) 30x36x4 (Actual Size) Air Filter - Furnace Filter (MERV 11)
ONLY: $44.97 each - FREE SHIPPING + SAVE When You Order More
custom filter MERV-11 Custom Filter 23-1/8x30-5/8x4
ONLY: $42.79 each - FREE SHIPPING + SAVE When You Order More
custom filter MERV-11 Custom Grill Filter 20x30x4 (19 5/8" X 29 5/8")
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MERV: If you don't already know the meaning of MERV, here is a definition: Simply stated, the higher the MERV number, the more efficient the air filter will be in removing contaminants and pollutants from the airflow in your home or office. A MERV 13 air filter is more than twice as efficient as a MERV 8 in removing contaminants 1 micron in size. To understand how small 1 micron is, a human hair measures 100 microns. Finally, keep in mind that the MERV rating has nothing to do with size. MERV 8 and MERV 11 and MERV 13 are all the same size air filters for any given model number.

Caution, Ordering The Right Size:  Measure your existing filter because the size written on the frame may, or may not be the true size. Depending on the manufacturer, the size on your filter frame could be "Nominal" (by name only) or "Actual" (true size). For example, a 20x24 "Nominal" filter will measure 19 1/2 x 23 1/2. On the other hand, a 20 x 24 "Actual" filter will truly measure 20 x 24.  If you need a "Nominal Size", but order an "Actual Size", the filter you get will not fit

Custom-made Filters:  If you do not see your size in the table above or find it in our search engine, we can make a special custom-made air filter for you.  Just email us the exact size, and we will get back to you with the price.....Custom-made filters cannot be re-stocked, so for that reason they cannot be returned if you order the wrong size,  So, please make sure that you order the right size. .