8_1/2x30x1 Exact MERV 13 AC Furnace Filters 6 Pack Travel Bags & Backpacks "I grow in living soil

"I grow in living soil and this filter is non-negotiable

Also includes two 172 millimeter metal fan guards and a mounting screw set

Generates much less heat than HPS and MH

Moderate pH

Made to Measure Dimensions

8_1/2x30x1 Exact MERV 13 AC Furnace Filters 6 Pack Travel Bags & Backpacks "I grow in living soilNordic 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