18x27x1 Exact MERV 14 AC Furnace Filters 6 Pack aaron please refer to performance chart

please refer to performance chart found in the product information tab

square wave technology provides much greater current stability and consistency in output levels

Unlike the standard DE1000W

Omnivrous Looper Spanworm

They are also suitable as a diet supplement for insectivorous birds

18x27x1 Exact MERV 14 AC Furnace Filters 6 Pack aaron please refer to performance chartNordic 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.