20x21_1/2x1 Exact MERV 14 AC Furnace Filters 6 Pack sprayers-and-wands all essential micro- and macronutrients

all essential micro- and macronutrients are covered — no additives needed

minimizing specialized inventory requirements

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

GROW adds more nitrogen for growth

20x21_1/2x1 Exact MERV 14 AC Furnace Filters 6 Pack sprayers-and-wands all essential micro- and macronutrientsNordic 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.