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Actual sizes vary depending on brand. 5" depth is really
4 3/8, or 4 3/4, or 5 1/4 .
> Honeywell Air Filters > Honeywell FC40R Series, Return Grill Media Filters > Honeywell FC40R1144 - ( 20 x 40 x 4)

HONEYWELL AIR FILTER

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SEAL-TIGHT™ GRILL FILTER

Seal-Tight filters have a one inch foam strip along the perimeter.
Unlike other return grill filters, the special foam strip creates
a very tight fit that prevents any air from by-passing the filter.

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Honeywell Air Filter SEAL-TIGHT™ Return Air Grille Filter, 20X40X4 (19 3/4" x 39 3/4" x 3 3/4") MERV 8

Honeywell Filter - Grille Air Filter, Furnaces For:

Nominal size 20" x 40" x 4" Actual size 19 3/4" x 39 3/4" x 3 3/4"

ONLY: $48.86 each - WE BEAT ANY PRICE - Just email info@oxyclean.com
Honeywell Grille Air Filter SEAL-TIGHT™ Return Air Grille Filter, 20X40X4 (19 3/4" x 39 3/4" x 3 3/4") MERV 11

Seal-Tight Honeywell Replacement Filter - Grille Air Filter, Furnaces For:

Nominal size 20" x 40" x 4" Actual size 19 3/4" x 39 3/4" x 3 3/4"

ONLY: $50.86 each - WE BEAT ANY PRICE - Just email info@oxyclean.com
Honeywell ODOR DEFENSE Air Filter SEAL-TIGHT™ Return Air Grille Filter with ODOR DEFENSE® 20X40X4

Genuine OXYCLEAN AIR FILTERS with ODOR DEFENSE®

Honeywell Filter - Grill Aftermarket Air Filter, Furnaces For:
FC40R1144

Nominal size 20" x 40" x 4" Actual size 19 3/4" x 39 3/4" x 3 3/4"

ONLY: $52.53 each - WE BEAT ANY PRICE - Just email info@oxyclean.com
Honeywell Air Filter SEAL-TIGHT™ Return Air Grille Filter, 20X40X4 (19 3/4" x 39 3/4" x 3 3/4") MERV 13 AfterMarket

Seal-Tight Honeywell Replacement Filter - Grille Air Filter, Furnaces For:

Nominal size 20" x 40" x 4" Actual size 19 3/4" x 39 3/4" x 3 3/4"

ONLY: $52.86 each - WE BEAT ANY PRICE - Just email info@oxyclean.com