20x20x4 (3 5/8) Pleated MERV 7 Air Filters 6 Pack featured DIMMING: 0-10V Dim

DIMMING: 0-10V Dim

such as controlled environments or cleanrooms

allowing it to be mounted horizontally or vertically

EPA 25(b) Exempt product with proven safe ingredients

20x20x4 (3 5/8) Pleated MERV 7 Air Filters 6 Pack featured DIMMING: 0-10V DimImportant 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