20x20x4 (3 5/8) Pleated Air Filters MERV 13 Plus Carbon 2 Pack Flushing Solution and not directly to the

and not directly to the fans themselves

Grow1 trellis netting is an efficient and affordable way to support your next harvest

What's the key to ensuring fungal and bacterial pathogens don't wipe out your plants and flowers

Weight: Lightweight for easy field use

Medium - Case of 10 sleeves (10 units per sleeve)

20x20x4 (3 5/8) Pleated Air Filters MERV 13 Plus Carbon 2 Pack Flushing Solution and not directly to theImportant 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