20x25x4 (3 5/8) Pleated MERV 7 Air Filters 2 Pack CO2 120V motor with rear mounted

120V motor with rear mounted speed controls and comes with a 7' white power cord

Dual Independent Control Groups – Manage two separate lighting zones (A/B) independently from a single controller for maximum grow room flexibility

Two separate lighting control channels allow users to control two different lighting systems with separate setpoints

Ergonomically shaped

20x25x4 (3 5/8) Pleated MERV 7 Air Filters 2 Pack CO2 120V motor with rear mountedImportant 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