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

Within 24 hours of application

Rockwool's high water holding capacity will enable you to go on vacation without worrying about your plants drying out

up to 70% more than other cantilever rack shelves

Notice the "W" in the second version

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