17_1/4x17_1/4x1 Exact MERV 14 Plus Carbon AC Furnace Filters 6 Pack steel plant stake A single ceramic junction provides

A single ceramic junction provides long electrode life in harsh environments

All fittings included

they are safe to use in your conventional oven

Built with high-quality materials

greenhouse ornamentals and vegetables

17_1/4x17_1/4x1 Exact MERV 14 Plus Carbon AC Furnace Filters 6 Pack steel plant stake A single ceramic junction providesNordic 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