13x20x1 Exact MERV 8 AC Furnace Filters 6 Pack fans-ventilation-ducting CMH technology incorporates spectral wavelengths

CMH technology incorporates spectral wavelengths not found inside the PAR range

antibiotics or chlorides found in some animal-sourced fertilizers

voted High Times Magazine product of the year for three years running

Your plants will thank you with healthy new growth

Both filter and remove up to 99% of the chlorine and 87% of the chloramine compounds used in municipal water supplies

13x20x1 Exact MERV 8 AC Furnace Filters 6 Pack fans-ventilation-ducting CMH technology incorporates spectral wavelengthsNordic Pure MERV 8 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 and other contaminants are removed. MERV 8 furnace filters are comparable to HVAC filters with the rating of MPR 800. While different companies use different scales to measure the air filters