17_1/8x34_7/8x1 MERV 13 Plus Carbon AC Furnace Filters 6 Pack refurbished-products 7V | Red = 4

7V | Red = 4

Advanced Dimmable feature with Use of External B-Lite Master Zone Controller (1W - 660W)

A major Florida hospital was failing USP 797 testing with positive growth results of airborne Bacillus non-sporulating and airborne Aspergillus flavus mold spores

Maximum Height: 12

17_1/8x34_7/8x1 MERV 13 Plus Carbon AC Furnace Filters 6 Pack refurbished-products 7V | Red = 4Nordic 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