17x21x1 Exact MERV 7 Plus Carbon AC Furnace Filters 12 Pack water-filtration When planning your greenhouse

When planning your greenhouse

the BlackBird delivers the intensity and spectrum your plants need from veg through harvest

Reinforced with a deep

The smart auto modes trigger your fan to activate in response to climate changes

Supplied with Certificate of Analysis

17x21x1 Exact MERV 7 Plus Carbon AC Furnace Filters 12 Pack water-filtration When planning your greenhouseNordic Pure pleated AC air filters are made of electrostatically charged synthetic materials that attract and capture most airborne particulates in your home or office. Each time air passes through a Nordic Pure pleated furnace filter, lint, household dust, pollen, dust mites, pet dander, baking flour, mold spores and other contaminants are removed. Our filter media prevents the growth of bacteria or mold, resulting in a much healthier living space.