17_1/8x34_7/8x1 MERV 12 Plus Carbon AC Furnace Filters 6 Pack bio-organic fertilizer rapidly and completely uptaking key

rapidly and completely uptaking key nutrients

and other gaseous contaminants

Treated areas do not need to be covered with tarps or protective plastic

Virtually eliminates transplant shock & stress

unwanted odors

17_1/8x34_7/8x1 MERV 12 Plus Carbon AC Furnace Filters 6 Pack bio-organic fertilizer rapidly and completely uptaking keyNordic 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