17x22x1 MERV 8 AC Furnace Filters 6 Pack Promote Avoid mixing with strong fungicides

Avoid mixing with strong fungicides that may harm the live spores

Simple operation and maintenance

Durable plastic will give you years of use

improving the germination process and overall success of seedlings and cuttings

High humidity can also prevent plants from properly taking in CO2

17x22x1 MERV 8 AC Furnace Filters 6 Pack Promote Avoid mixing with strong fungicidesNordic Pure MERV 8 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 8 furnace filters are comparable to HVAC filters with the rating of MPR 800. While different companies use different scales to measure the air filters