20x25x4 (3 5/8) Pleated MERV 12 Air Filters 6 Pack Growing Media When mounted to 5-MSP pump

When mounted to 5-MSP pump

They can be located outside the grow room and a run of ducting can be extended from them into the room to extract the air and filter it

More about Torched Weed Killer - 2

• Cyclamen mites

Xtrasun series AC reflectors have integrated air-cool fittings for maximum air movement

20x25x4 (3 5/8) Pleated MERV 12 Air Filters 6 Pack Growing Media When mounted to 5-MSP pumpImportant 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