20x20x4 (3 5/8) Pleated MERV 12 Air Filters 1 Pack grow-system/-trays/-reservoirs pollinators

pollinators

The replacement belts are a commonly requested replacement part

1in x 6in)

delivers a higher PPFD (usable light that actually reaches the plant) per watt value to the plant canopy than other equivalent LED greenhouse fixtures

Included are beneficial mycorrhizal fungi

20x20x4 (3 5/8) Pleated MERV 12 Air Filters 1 Pack grow-system/-trays/-reservoirs pollinatorsImportant 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