16x20x4 (3 5/8) Pleated Air Filters MERV 13 Plus Carbon 2 Pack food-&-water-storage With energy efficiency reaching 2

With energy efficiency reaching 2

Insert grow tray

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Drying and Curing Rooms – Control moisture levels precisely during post-harvest drying to protect quality and prevent mold

16x20x4 (3 5/8) Pleated Air Filters MERV 13 Plus Carbon 2 Pack food-&-water-storage With energy efficiency reaching 2Important 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 16x20x4 filter