17_1/2x21x1 Exact MERV 12 AC Furnace Filters 6 Pack tents-&-tarps Safe to use until day

Safe to use until day of harvest

Long sleeves

Delivers an optimized spectrum and high level of photosynthetic active radiation to promote healthy plant growth

Our best yield results have come from utilizing a clone machine and growing in a coco medium

Lumens: over 4

17_1/2x21x1 Exact MERV 12 AC Furnace Filters 6 Pack tents-&-tarps Safe to use until dayNordic 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