16_3/8x21_3/8x1 Exact MERV 13 AC Furnace Filters 6 Pack Water Treatment Pre-punched drainage holes

Pre-punched drainage holes

Made from OMRI Listed Worm Castings

and now include even more to enjoy

Week 1 – 10-12ml per gallon

Ducting Port Quantity: 8 (11" Double Cinching)

16_3/8x21_3/8x1 Exact MERV 13 AC Furnace Filters 6 Pack Water Treatment Pre-punched drainage holesNordic 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