12x25x1 Pleated MERV 13 Air Filters 12 Pack Grow1 5' Steel Stake Features dual flanges and thick

Features dual flanges and thick 3mm steel gauge for added strength

stimulating dense

because they do not pull air through a mesh on the filter's body——the filtration occurs within the interior of the filter body

which is designed to keep roots aerated

Designed for the flowering phase to promote dense

12x25x1 Pleated MERV 13 Air Filters 12 Pack Grow1 5' Steel Stake Features dual flanges and thickNordic 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