16_1/4x21_1/4x1 Exact MERV 7 Plus Carbon AC Furnace Filters 6 Pack spl_hgc and breaks down safely into

and breaks down safely into the soil — leaving no harmful residue behind

up to 80% more than other cantilever rack shelves

the HydroGEN CO2 monitor uses indicator lights to show approximate CO2 levels

30 Pint is 4

Automatic Shut-off

16_1/4x21_1/4x1 Exact MERV 7 Plus Carbon AC Furnace Filters 6 Pack spl_hgc and breaks down safely intoNordic Pure Custom MERV 7 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