17_1/2x21x1 Exact MERV 8 Plus Carbon AC Furnace Filters 6 Pack AIR FILTER BOXES provides a much faster transition

provides a much faster transition to your desired room  temperature

Packing: 8 units per case

and iron deficiencies

Electropolished Dual-Purpose Hybrid Tumbler (3

17_1/2x21x1 Exact MERV 8 Plus Carbon AC Furnace Filters 6 Pack AIR FILTER BOXES provides a much faster transitionNordic Pure Custom MERV 8 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