17x26x1 Exact MERV 12 Plus Carbon AC Furnace Filters 6 Pack rock-bottom FloraFlex® has engineered the highest

FloraFlex® has engineered the highest quality

Superior Wetting of the Soil Mix

Built-in defrost system engages at 32°F

Setup was straightforward and the build quality is exactly what I'd expect from FloraFlex

Screen Sizes:

17x26x1 Exact MERV 12 Plus Carbon AC Furnace Filters 6 Pack rock-bottom FloraFlex® has engineered the highestNordic Pure Custom MERV 12 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