24x25x1 MERV 13 Plus Carbon AC Furnace Filters 6 Pack CO2 and are a near 100%

and are a near 100% blackout material to help prevent photosynthesis and seed germination

Fits two propogation trays side by side

Large Easy-View windows offer progress view access without compromising your growing environment

and green spectral energy optimizing plant growth and yield

A manual flush valve allows you to clean the membrane

24x25x1 MERV 13 Plus Carbon AC Furnace Filters 6 Pack CO2 and are a near 100%Nordic 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.