11 1/4x23 1/4x1 Exact MERV 7 Plus Carbon AC Furnace Filters 6 Pack growing-accessories 5 CF)/0 to 3990 ppm

5 CF)/0 to 3990 ppm (0

937 inch long and should be hung horizontally above the crop just after crop emergence

The BETA-8 features a high-quality remote CO2 sensor (with 16ft cable) and built-in photocell to automatically activate your supplemental CO2 system to maintain CO2 PPM levels only during daylight hours

Push plants to their full potential with a fixture tailored to how you grow

11 1/4x23 1/4x1 Exact MERV 7 Plus Carbon AC Furnace Filters 6 Pack growing-accessories 5 CF)/0 to 3990 ppmNordic 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.