11.88x16.88x4 (Actual Size) Accumulair Platinum 4-Inch Filter (MERV 11)

Our MERV 11 Accumulair filters are great at reducing airborne allergens such as bacteria, particles that carry viruses, pollen, mold spores, fine dust, and pet dander. Electrostatically charged filter media captures airborne allergens smaller than 1 micron!

Accumulair filtering material will not support the development of mold, mildew, bacteria or other microorganisms in normal use.

No chemicals added. These high quality air filters are chemical free!

Over 30-times more efficient at capturing micro particles than ordinary fiberglass air filters.

Accumulair air filters lasts UP TO 3 months, and sometimes longer!

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 properly, and vice-versa.