20x25x4 (3 5/8) Pleated Air Filters MERV 13 Plus Carbon 1 Pack MH The Max-Fan™ is an inline

The Max-Fan™ is an inline mixed flow fan capable of medium to high static pressure

Provides 2100 μmol/s when operated at 1150W

Maximum durability

E2: temperature is too high

Thanks to the variable speed controls

20x25x4 (3 5/8) Pleated Air Filters MERV 13 Plus Carbon 1 Pack MH The Max-Fan™ is an inlineImportant 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