20x25x4 (3 5/8) Pleated Air Filters MERV 7 Plus Carbon 2 Pack nutrients 7” fans and large aluminum

7” fans and large aluminum cooling heat sinks (0

A louver vent hood designed to protect fans from and prevent entry of dust

and rebuilt to support the demands of the horticulture industry

Variable Speed Control

The overall height has been reduced by four inches

20x25x4 (3 5/8) Pleated Air Filters MERV 7 Plus Carbon 2 Pack nutrients 7” fans and large aluminumImportant 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 20x25x4 filter