13_1/4x13_1/4x1 Exact MERV 7 Plus Carbon AC Furnace Filters 6 Pack AIR FILTER BOXES one-time use sachets ensure freshness

one-time use sachets ensure freshness of solution

the flanges include sealing foam and six screws for an easy fit

Even light distribution

dew point and now CO2)

13_1/4x13_1/4x1 Exact MERV 7 Plus Carbon AC Furnace Filters 6 Pack AIR FILTER BOXES one-time use sachets ensure freshnessNordic Pure Custom MERV 7 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