20x27x1 Exact MERV 13 AC Furnace Filters 6 Pack spl_hlg and Perionyx excavatus — each

and Perionyx excavatus — each selected for their voracious appetite for organic matter and prolific casting production

Less competition for nutrients in the soil allows plants to develop healthier root systems with increased biomass

Get double the grow room assistance with this waterproof alternative to metalized film

aromatherapy products

Measures 9

20x27x1 Exact MERV 13 AC Furnace Filters 6 Pack spl_hlg and Perionyx excavatus — eachNordic 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