20x20_1/2x1 Exact MERV 7 AC Furnace Filters 6 Pack Steel stake The Neutralizer Replacement Cartridge Retail

The Neutralizer Replacement Cartridge Retail Box contains:

and the rubber feet minimize vibration and hum as they protect the surface the ballast sits on

allowing plants to access phosphorus

No Leak Ducting Ports

They are designed to accommodate 2' x 4' propagation rafts ("lettuce rafts")

20x20_1/2x1 Exact MERV 7 AC Furnace Filters 6 Pack Steel stake The Neutralizer Replacement Cartridge RetailNordic 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