18x27x1 MERV 12 AC Furnace Filters 6 Pack plant-care/pest-&-disease-control Water saving polymers offer a

Water saving polymers offer a more consistent food and water supply

6" diameter flanges

Two-Way Humidity Control – Actively adds or absorbs moisture to maintain a precise 62% RH

making sure newly planted seedlings won’t dry out

and conceal odors

18x27x1 MERV 12 AC Furnace Filters 6 Pack plant-care/pest-&-disease-control Water saving polymers offer aNordic 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