20x25x4 (3 5/8) Pleated MERV 13 Air Filters 1 Pack Tents & Tarps Sunshine Perlite is a porous

Sunshine Perlite is a porous

- Adjustable wing to widen or limit your lighting space

Botrytis and Pythium at bay

strong root systems throughout the growing season

and a convenient handle on the side

20x25x4 (3 5/8) Pleated MERV 13 Air Filters 1 Pack Tents & Tarps Sunshine Perlite is a porousImportant 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 20x25x4 filter