17_1/8x34_7/8x1 MERV 12 Plus Carbon AC Furnace Filters 6 Pack bio-organic fertilizer Virtually eliminates transplant shock &

Virtually eliminates transplant shock & stress

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

unwanted odors

Will fit into any size vehicle for transportation

Suited for main light and supplement lighting

17_1/8x34_7/8x1 MERV 12 Plus Carbon AC Furnace Filters 6 Pack bio-organic fertilizer Virtually eliminates transplant shock &Nordic 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