17_1/2x21x1 Exact MERV 14 AC Furnace Filters 6 Pack Hydro Systems Twister T4 Tumbler - Standard

Twister T4 Tumbler - Standard

· Lumens per Watt (lw/w) - 120

- Easy to use CO2 enrichment or CO2 ventilation controller

and has an upgraded fan motor to drive the new triple fan blades

Is it waterproof

17_1/2x21x1 Exact MERV 14 AC Furnace Filters 6 Pack Hydro Systems Twister T4 Tumbler - StandardNordic 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.