12_3/4x20_3/4x1 Exact MERV 12 AC Furnace Filters 6 Pack grow-light-ballasts The granulate is prilled for

The granulate is prilled for easy mixing

and their stand-off feet with vertical drain holes provide excellent drainage

environmentally friendly

Anodizing surface

HM Digital PH-200 Water pH Testing Meter

12_3/4x20_3/4x1 Exact MERV 12 AC Furnace Filters 6 Pack grow-light-ballasts The granulate is prilled forNordic Pure MERV 12 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, allergens and other contaminants are removed. MERV 12 furnace filters are comparable to HVAC filters with the rating of MPR 1500 1900. While different