21x23x1 Exact MERV 12 AC Furnace Filters 6 Pack bio soil Precisely designed for use on

Precisely designed for use on all veggies

Ideal for hoop houses and greenhouses

Enhances phosphate interaction with other plant nutrients

Easy to use compressed granules

increasing plant productivity In all environments

21x23x1 Exact MERV 12 AC Furnace Filters 6 Pack bio soil Precisely designed for use onNordic Pure MERV 12 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, smoke particles, virus carriers, allergens and other contaminants are removed. MERV 12 furnace filters are comparable to HVAC filters with the rating of MPR 1500 1900. While different