25x28x1 MERV 13 AC Furnace Filters 6 Pack Extension Humidity Activated

Humidity Activated

filters or other equipment a snap

and prevents your nutrients from falling out of solution

Start using Rootbastic when roots are approximately 2 inches long

25x28x1 MERV 13 AC Furnace Filters 6 Pack Extension Humidity ActivatedNordic Pure MERV 13 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 13 furnace filters are comparable to HVAC filters with the rating of MPR 2200