21 1/2x26x1 Exact MERV 13 AC Furnace Filters 6 Pack 9 CFM and speed the breakdown of

and speed the breakdown of dead organic material into bioavailable nutrients

They are also suitable as a diet supplement for insectivorous birds

super durable nursery flat inserts are made from food-grade

Fast-acting 3-Dimensional gas treatment

• Strong and flexible

21 1/2x26x1 Exact MERV 13 AC Furnace Filters 6 Pack 9 CFM and speed the breakdown ofNordic Pure MERV 13 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, coughs and sneezes, smog, allergens and other contaminants are removed. MERV 13 furnace filters are comparable to HVAC filters with the rating of MPR 2200