20x28x1 Exact MERV 13 Plus Carbon AC Furnace Filters 6 Pack spl_jondon Its combination of hydrogen peroxide

Its combination of hydrogen peroxide and peroxyacetic acid offers broad spectrum control and kills instantly

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20x28x1 Exact MERV 13 Plus Carbon AC Furnace Filters 6 Pack spl_jondon Its combination of hydrogen peroxideNordic 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