23_3/4x23_3/4x1Exact MERV 8 Plus Carbon AC Furnace Filters 6 Pack spl_hw Features: OMRI listed

Features: OMRI listed

Optimal Growth - 8-9 months

Built-In Temperature Sensor

Use IGSPF206PF as replacement prefilter

sound-absorbing heavy gauge steel casing

23_3/4x23_3/4x1Exact MERV 8 Plus Carbon AC Furnace Filters 6 Pack spl_hw Features: OMRI listedNordic Pure Custom MERV 8 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