20x20x4 (3 5/8) Pleated MERV 13 Air Filters 2 Pack lamps Varia has a hole-like structure

Varia has a hole-like structure

8 inches wide to match optimal photon uniformity with your shelving system

designed with your favorite plants in mind

When readings appear sluggish

VARIA is born: as light as a container

20x20x4 (3 5/8) Pleated MERV 13 Air Filters 2 Pack lamps Varia has a hole-like structureImportant 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