17x27x1 Exact MERV 10 Plus Carbon AC Furnace Filters 6 Pack new releases If you change your pre-filters

If you change your pre-filters and the product water still flows slowly then it’s an indication you need a new membrane

Within 4-6 weeks

Advanced membrane technology and manufacturing processes ensure superior quality and unmatchable performance

4800-5000K

17x27x1 Exact MERV 10 Plus Carbon AC Furnace Filters 6 Pack new releases If you change your pre-filtersNordic Pure Custom MERV 10 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