11x32_1/2x1 Exact MERV 13 Plus Carbon AC Furnace Filters 6 Pack HPS OMRI listed for organic use

OMRI listed for organic use

Poor quality soil is transformed into rich and fat soil after a few days of use providing plants with natural minerals

removes lint

making it best for flowering periods

11x32_1/2x1 Exact MERV 13 Plus Carbon AC Furnace Filters 6 Pack HPS OMRI listed for organic useNordic Pure Custom MERV 13 Plus Carbon air filters are made based on the actual measurements so be sure to measure your current filter to get the EXACT dimensions before ordering. As with all Nordic Pure filters, the effective life of your filter depends on the environment in which you live. We recommend changing 1 and 2 filters every 30 90 days. Our 4, 5 and 6 inch thick filters could last up to 6 months. EXACT MEASUREMENT: Furnace and air condition