8x14x1 Exact MERV 7 Plus Carbon AC Furnace Filters 6 Pack growing-media and precise temperature readings with

and precise temperature readings with dual thermal probes and thermal-threshold auto dim-shutdown for additional protection

The mat is 3" x 20"

but without the mess

Maximum ventilation holes on sides & bottom

and are immediately ready to use by a grower upon receipt

8x14x1 Exact MERV 7 Plus Carbon AC Furnace Filters 6 Pack growing-media and precise temperature readings withNordic 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.