22x23x1 MERV 13 Plus Carbon AC Furnace Filters 6 Pack spl_hgc Long Battery Life - The

Long Battery Life - The Checker has an exceptional long battery life of approximately 1000 hours

Although our 2-part formulas already provide sufficient levels of Calcium and Magnesium

resulting in outstanding results when used in 2

MIDWEST AND EAST COAST ORDERS SHIPPING FROM OUR MICHIGAN WAREHOUSE WILL INCURE A $3

Rich Humic lab results show 22% humic acid through the alkaline extraction method and 3% humic acid through the acid-insoluble method

22x23x1 MERV 13 Plus Carbon AC Furnace Filters 6 Pack spl_hgc Long Battery Life - TheNordic Pure Custom MERV 13 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