20x25x4 (3 5/8) Furnace Air Filters MERV 8 Pleated Plus Carbon 6 Pack shoe-cover Dimming settings are available at

Dimming settings are available at 100% 75% and 50% give you an edge on controlling heat and other environmental factors in your garden

* Generator ready

HI7082M is a pH and ORP electrode fill solution that contains 3

Professional-grade fabric zipper door that is easily installed as an entry/exit door to a grow room features super durable material

Length: 25'

20x25x4 (3 5/8) Furnace Air Filters MERV 8 Pleated Plus Carbon 6 Pack shoe-cover Dimming settings are available atImportant 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