17_1/4x17_1/4x1 Exact MERV 12 Plus Carbon AC Furnace Filters 6 Pack hawthorne and suppresses powdery mildew

and suppresses powdery mildew

from the roll back loading to the time-saving Turn Loc system is thoughtfully designed to eliminate the hassles of trimming

Produces more PAR per watt than standard Metal Halide

A simple wipe down with a cloth and warm water will remove the small amount of residue that may be present

17_1/4x17_1/4x1 Exact MERV 12 Plus Carbon AC Furnace Filters 6 Pack hawthorne and suppresses powdery mildewNordic Pure Custom MERV 12 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