16x20x4 (3 5/8) Pure Carbon Pleated Odor Reduction Merv 8 Furnace Filters 6 Pack fans-ventilation-ducting grow tent ventilation systems

grow tent ventilation systems

each in a convenient dispenser pack

Set sizes available: 8

Designed to be installed into standard equipment racks

Each output (solenoid or pump) on the Aqua-x can be “assigned” to a specific WD-1

16x20x4 (3 5/8) Pure Carbon Pleated Odor Reduction Merv 8 Furnace Filters 6 Pack fans-ventilation-ducting grow tent ventilation systemsImportant 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 16x20x4 filter