12_3/4x20_3/4x1 Exact MERV 14 Plus Carbon AC Furnace Filters 6 Pack Extension The removable barrel gives users

The removable barrel gives users the ability to clean the entire unit quickly and easily

PPF - 2345 μmol/s

MERV-5 mesh blocks pollen

exhaust fans

12_3/4x20_3/4x1 Exact MERV 14 Plus Carbon AC Furnace Filters 6 Pack Extension The removable barrel gives usersNordic 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