8_1/2x30x1 Exact MERV 12 Plus Carbon AC Furnace Filters 6 Pack spl_hgc Max and Min readings of

Max and Min readings of CO2

Available in quart

Effective against most common pathogens and algae

Dimensions: 38" x 43" x 1"

Convert Digital Signal to Analog Signal

8_1/2x30x1 Exact MERV 12 Plus Carbon AC Furnace Filters 6 Pack spl_hgc Max and Min readings ofNordic Pure Custom MERV 12 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