17x29x1 Exact MERV 14 Plus Carbon AC Furnace Filters 6 Pack Chemicals Steel flange for filters and

Steel flange for filters and ducting

Includes a 12-foot corded sensor probe

Enjoy up to 60 days of fragrant air with each set of two AA batteries

1 x Reservoir pH Sensor

• White plastic for increased reflectivity

17x29x1 Exact MERV 14 Plus Carbon AC Furnace Filters 6 Pack Chemicals Steel flange for filters andNordic 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