18x22x1 MERV 7 AC Furnace Filters 6 Pack Grow Strong rooting cuttings and/or low-light growing

rooting cuttings and/or low-light growing conditions that contains a beneficial mycorrhizal inoculum (Glomus intraradices)

Listed diameter is measured from the inside of the bottom of the saucer

Use with CO2 regulator and tank to evenly distribute CO2 to your grow area and plants

Nordic Pure 14x24x1 MERV 10 Plus Carbon air filters are made of a dual material where the MERV rated material has been fused together with a carbon layer

18x22x1 MERV 7 AC Furnace Filters 6 Pack Grow Strong rooting cuttings and/or low-light growingNordic 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