17x28x1 Exact MERV 10 Plus Carbon AC Furnace Filters 6 Pack spl_hf BPA and heavy metal-free

BPA and heavy metal-free

Recommended usage is 3 pounds per acre

Leafhoppers and stem-boring Lepidoptera

Combined with its ability to improve the plants’ own photosynthetic machinery and inhabit the root zone

flavorful vapor

17x28x1 Exact MERV 10 Plus Carbon AC Furnace Filters 6 Pack spl_hf BPA and heavy metal-freeNordic 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