20x25x4 (3 5/8) Pleated Air Filters MERV 14 Plus Carbon 6 Pack Pumps & Irrigation The Max-Fan family has been

The Max-Fan family has been designed to be the smallest

Fixture comes with industry thickest heatsink guarantee you less heat and longest product lifespan

Exclusive "Zero" calibration feature—accurate to 2%

Dimensions: 19

20x25x4 (3 5/8) Pleated Air Filters MERV 14 Plus Carbon 6 Pack Pumps & Irrigation The Max-Fan family has beenImportant 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