16x20x4 (3 5/8) Pure Carbon Pleated Odor Reduction Merv 8 Furnace Filters 6 Pack Grow System/ Trays/ Reservoirs producing up to 106 CFM

producing up to 106 CFM and 28 dBA in noise

A Tailored Growing Experience

You can also place planters into the trays

Patterned after our popular Raptor reflector

5°C /±1°F Calibration automatic

16x20x4 (3 5/8) Pure Carbon Pleated Odor Reduction Merv 8 Furnace Filters 6 Pack Grow System/ Trays/ Reservoirs producing up to 106 CFMImportant 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