22x29x1 MERV 13 AC Furnace Filters 6 Pack Hydroponics Specification : SF-4000 new version

Specification : SF-4000 new version

Do not refrigerate

Although there are small amounts of bat guano for microbial support

Housing Galvanized

22x29x1 MERV 13 AC Furnace Filters 6 Pack Hydroponics Specification : SF-4000 new versionNordic 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