8.75 x 18 x 0.75 Exact Size Air Filter spl_hgc Since there’s no need for

Since there’s no need for spot checks or manual adjustments

Safe for use in irrigation systems

VermiFire performs above and beyond the call of duty

Cost of Energy is 70-90% of life time cost

Why Automatic

8.75 x 18 x 0.75 Exact Size Air Filter spl_hgc Since there’s no need forNordic Pure Custom MERV 10 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