20x21_1/2x1 Exact MERV 14 AC Furnace Filters 6 Pack sprayers-and-wands GROW adds more nitrogen for

GROW adds more nitrogen for growth

- Everything you need to control a small or medium sized indoor facility

you now have more options on the tumbler combinations to suit your needs

8 passively cooled bars eliminate moving parts and provide full-spectrum

minimizing specialized inventory requirements

20x21_1/2x1 Exact MERV 14 AC Furnace Filters 6 Pack sprayers-and-wands GROW adds more nitrogen forNordic 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.