8_1/2x30x1 Exact MERV 8 Plus Carbon AC Furnace Filters 6 Pack hand-tools Color: 100% Black on both

Color: 100% Black on both sides (All Black)

Nordic Pure 20x24x4 Pleated Air Filters MERV 15 are made of electrostatically charged synthetic materials that attract and capture most airborne particulates in your home

Designed for simplicity of use in taking rapid light measurements

In contrast to phosphate

8_1/2x30x1 Exact MERV 8 Plus Carbon AC Furnace Filters 6 Pack hand-tools Color: 100% Black on bothNordic 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