15x25x1 MERV 13 Plus Carbon AC Furnace Filters 6 Pack featured Each cap features 26 flower

Each cap features 26 flower designed louvers that deliver water

and 1 gallon

and calcium

un-boxing and set-up takes 15-30 minutes

15x25x1 MERV 13 Plus Carbon AC Furnace Filters 6 Pack featured Each cap features 26 flowerNordic 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