20x20x4 (3 5/8) Pleated MERV 15 Air Filters 6 Pack king from the start

from the start

Limited effects on beneficial organisms (beneficial nematodes

Roots Organics potting soil encourages healthier plants and better yields

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20x20x4 (3 5/8) Pleated MERV 15 Air Filters 6 Pack king from the startImportant 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