13x23x1 MERV 13 Plus Carbon AC Furnace Filters 6 Pack Water Filtration • For comerial or residential

• For comerial or residential applications

The high carbon steel blades are hollow ground

Best Par Maintenance

which is cooling only

and O-ring)

13x23x1 MERV 13 Plus Carbon AC Furnace Filters 6 Pack Water Filtration • For comerial or residentialNordic Pure Custom MERV 13 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