8x8x1 Exact MERV 13 Plus Carbon AC Furnace Filters 6 Pack food-&-water-storage PPF - 2345 μmol/s

PPF - 2345 μmol/s

RHP certified

- off additional delay

Recirculating: Use 5-10 ml of Royal Flush per gallon of pure water in your reservoir and run the system for an initial 20-60 minutes

8x8x1 Exact MERV 13 Plus Carbon AC Furnace Filters 6 Pack food-&-water-storage PPF - 2345 μmol/sNordic 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