22x23x1 MERV 14 Plus Carbon AC Furnace Filters 6 Pack led IP66 Waterproof

IP66 Waterproof

pH sampling assembly

immersible >1M

has a high cation exchange rate with potassium

After each use

22x23x1 MERV 14 Plus Carbon AC Furnace Filters 6 Pack led IP66 WaterproofNordic 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