20x20x4 (3 5/8) Pleated MERV 10 Air Filters 6 Pack Trimmers Packing: 45 units per case

Packing: 45 units per case

If you’re new to tumbling technology

Current runs between two electrodes within the canister

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LED Full Spectrum White Bar 110w

20x20x4 (3 5/8) Pleated MERV 10 Air Filters 6 Pack Trimmers Packing: 45 units per caseImportant 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