20x20x4 (3 5/8) Pleated MERV 15 Air Filters 1 Pack Ventilation grow room dehumidifier control and

grow room dehumidifier control and remote sensing via Support Modules DH18082 (sold separately)

in addition to being handled less by your staff

EZ-CLONE Clear Rez is currently available in 2oz

the bag itself is a 30-gallon grow bag containing just less than 20 gallons of the finest quality potting mix

Plum Curculio (Conotrachelus nenuphar)

20x20x4 (3 5/8) Pleated MERV 15 Air Filters 1 Pack Ventilation grow room dehumidifier control andImportant 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 20x20x4 filter