12_1/2x23_1/2x1 MERV 14 Plus Carbon AC Furnace Filters 6 Pack leds They are baked in an

They are baked in an open furnace using high grade clean fuels

ENVIRONMENT - 0-50C and 95% RH max

overflow extensions and debris screens easily slip into outlets

The active ingredient in this broad spectrum insecticide

12_1/2x23_1/2x1 MERV 14 Plus Carbon AC Furnace Filters 6 Pack leds They are baked in anNordic 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