20x20x4 (3 5/8) Pleated MERV 7 Air Filters 6 Pack grow-light-reflectors Doesn't harm beneficial predatory insects

Doesn't harm beneficial predatory insects such as lady bugs or praying mantis

controls gnats at different points of their lifecycle

Provides high efficiency and high lumen output

pls feel free to email us if you have any questions

20x20x4 (3 5/8) Pleated MERV 7 Air Filters 6 Pack grow-light-reflectors Doesn't harm beneficial predatory insectsImportant 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