20x28x1 Exact MERV 14 AC Furnace Filters 6 Pack chillers-heaters-and-purification Simple 1 button calibration for

Simple 1 button calibration for pH 7 and pH 4

Only availible from our California distribution center

This quality SunGro product is recommended where high air capacity and fast drainage are needed: during winter months

May be daisy-chained together

20x28x1 Exact MERV 14 AC Furnace Filters 6 Pack chillers-heaters-and-purification Simple 1 button calibration forNordic Pure MERV 14 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 14 furnace filters are comparable to HVAC filters with the rating of MPR 2800.