13x20x1 Exact MERV 7 AC Furnace Filters 12 Pack grow-system/-trays/-reservoirs Regular maintenance keeps flavors fresh

Regular maintenance keeps flavors fresh and vapor smooth

This powerful new microbial product effectively draws nitrogen from the atmosphere and converts it to a form usable to the plant

select the COSYS20

* Ergonomic and free-standing

320 Pints Per Day

13x20x1 Exact MERV 7 AC Furnace Filters 12 Pack grow-system/-trays/-reservoirs Regular maintenance keeps flavors freshNordic 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