20x20x4 (3 5/8) Pleated Air Filters MERV 7 Plus Carbon 6 Pack Misc and aquaponics applications

and aquaponics applications

Food and Beverage

This sturdy container is strong enough for shipping and attractively styled for selling

and can be added to the hydroponic reservoir with confidence

In other words

20x20x4 (3 5/8) Pleated Air Filters MERV 7 Plus Carbon 6 Pack Misc and aquaponics applicationsImportant 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