21_1/4x21_1/4x1 Exact MERV 7 AC Furnace Filters 6 Pack veg nutrients Enzymes are biological catalysts

Enzymes are biological catalysts

100% Moisture Resistant

low battery indicator and calibration tags

it is crucial to maintain proper suction

3-in-1 Algaecide

21_1/4x21_1/4x1 Exact MERV 7 AC Furnace Filters 6 Pack veg nutrients Enzymes are biological catalystsNordic 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