16_3/8x21_3/8x1 Exact MERV 12 Plus Carbon AC Furnace Filters 6 Pack Chemicals powdery mildew

powdery mildew

MegaPhos is a high concentration of a unique

Milky Spore is a one-time application

The grille is constructed of heavy-duty steel

and a heavy base to reduce tipping

16_3/8x21_3/8x1 Exact MERV 12 Plus Carbon AC Furnace Filters 6 Pack Chemicals powdery mildewNordic Pure Custom MERV 12 Plus Carbon air filters are made based on the actual measurements so be sure to measure your current filter to get the EXACT dimensions before ordering. As with all Nordic Pure filters, the effective life of your filter depends on the environment in which you live. We recommend changing 1 and 2 filters every 30 90 days. Our 4, 5 and 6 inch thick filters could last up to 6 months. EXACT MEASUREMENT: Furnace and air condition