20x20x4 (3 5/8) Pleated MERV 15 Air Filters 1 Pack chillers-heaters-and-purification Built upon their Nature’s Pride

Built upon their Nature’s Pride base bloom

and retailers worldwide

The fans are set to move air upwards vertically

25-inch Long

Revolutionary new membrane technology with increased flow rate and the ability to run at pressures as low as 20 psi

20x20x4 (3 5/8) Pleated MERV 15 Air Filters 1 Pack chillers-heaters-and-purification Built upon their Nature’s PrideImportant Note: Almost ALL furnace filters have a different "actual size" than the nominal size printed on the air conditioner filter. It's best if you measure your air filter for the EXACT size and compare it to our "Actual Size" and then you can be sure your A C air filter fits! With the 4" and 5" air filters there is a wider variance between the nominal and actual size depending on the manufacturer. If you are replacing a 4 3 8 depth 20x20x4 filter