17x28x1 Exact MERV 14 Plus Carbon AC Furnace Filters 6 Pack Extension Within 24 hours of application

Within 24 hours of application

Tarp Zip-Up's zipper is very unique in that it solves the problem of creating a secure and easy to install door into sealed off areas and plastic film structures

*Tested and Verified by AHAM - Testing standard of 24 hrs at 80°F

Notice the "W" in the second version

2 RAW Nitrogen - 8 oz

17x28x1 Exact MERV 14 Plus Carbon AC Furnace Filters 6 Pack Extension Within 24 hours of applicationNordic Pure Custom MERV 14 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