20x20x4 (3 5/8) Pleated MERV 15 Air Filters 1 Pack chillers-heaters-and-purification hands-free drainage — ideal for

hands-free drainage — ideal for commercial or unattended operation

pollen-shedding

CMH 630W replacement reflector

The fans are set to move air upwards vertically

20x20x4 (3 5/8) Pleated MERV 15 Air Filters 1 Pack chillers-heaters-and-purification hands-free drainage — ideal forImportant 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