16x20x2 Pleated MERV 7 Air Filters 12 Pack Hydroponics and speed adjustment dial

and speed adjustment dial

this blend will allow growers more frequent feedings and a high degree of control

4" Booster In-Line Duct Fan

Produce your own worm castings with the Hot Frog Living Composter

Daisy-chain up to 5 units (4 of these add-on units plus the the Commercial Mat MTMDU)

16x20x2 Pleated MERV 7 Air Filters 12 Pack Hydroponics and speed adjustment dialNordic Pure MERV 7 Pleated AC Furnace Air Filters provide exceptional filtration for both home and commercial environments. Each time air passes through a Nordic Pure pleated furnace air filter, lint, dust, pollen, bacteria, pet dander, dust mites, mold spores and other contaminants are removed. MERV 7 furnace filters are comparable to HVAC filters with the rating of MPR 600. While different companies use different scales to measure the air filters