24x25x1 MERV 14 AC Furnace Filters 6 Pack grow-light-ballasts This product is also effective

This product is also effective against Gnats

Bloom 6'X3'

Growing in a compact space where every inch matters

and 1000 ppm calibration solution

24x25x1 MERV 14 AC Furnace Filters 6 Pack grow-light-ballasts This product is also effectiveNordic 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.