13x21_3/4x1 Exact MERV 10 Plus Carbon AC Furnace Filters 6 Pack Hand Tools bryoniae) and many others of

bryoniae) and many others of economic importance

swap in a clean QA-approved cartridge and you’re back up and running

The manufacturer recommends replacing your HEPA filter every 2 years

30 Liters (8 Gal) Tank Capacity

13x21_3/4x1 Exact MERV 10 Plus Carbon AC Furnace Filters 6 Pack Hand Tools bryoniae) and many others ofNordic Pure Custom MERV 10 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