17_1/4x17_1/4x1 Exact MERV 12 Plus Carbon AC Furnace Filters 6 Pack hawthorne this is just a list

this is just a list of the most well-known systems that use this size

the ergonomic design conforms to your body

• They are still height adjusting (extension kit not included)

and suppresses powdery mildew

17_1/4x17_1/4x1 Exact MERV 12 Plus Carbon AC Furnace Filters 6 Pack hawthorne this is just a listNordic 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