Air Bear 20x25x5 (4 7/8) Replacement 266649-102 MERV 15 Air Filters 2 Pack cleanroom The 4RS-1 must be installed

The 4RS-1 must be installed with a 120/240 volt power circuit (up to 50-amps @ 240vac)

Extension Kit 8’11” Weight 50 lbs

affecting yield and immune function

Hydrofarm has made it easy to start a tent grow by gathering several vital components into one package

grow tent ventilation systems

Air Bear 20x25x5 (4 7/8) Replacement 266649-102 MERV 15 Air Filters 2 Pack cleanroom The 4RS-1 must be installedImportant 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. We also carry 4 3 8 and 5 1 4 inch depth filters,