11 1/4x11 1/4x1 Exact MERV 14 AC Furnace Filters 12 Pack Steel stake Low Amperage

Low Amperage

Use to Raise the pH to the proper levels when pH is too low

Refill cartridge for Air Box 4+

Working Environments:                Temperature 32-122°F

It can be used in conjunction with a variety of fertilizers and highly recommended for the brewing of plant teas

11 1/4x11 1/4x1 Exact MERV 14 AC Furnace Filters 12 Pack Steel stake Low AmperageNordic 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.