8_1/2x30x1 Exact MERV 8 Plus Carbon AC Furnace Filters 6 Pack hand-tools In contrast to phosphate

In contrast to phosphate

Designed for simplicity of use in taking rapid light measurements

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

Each shoe cover is low-linting and sterilized to a 10⁻⁶ sterility assurance level (SAL)

8_1/2x30x1 Exact MERV 8 Plus Carbon AC Furnace Filters 6 Pack hand-tools In contrast to phosphateNordic 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