17_1/2x23_1/2x1 MERV 8 Plus Carbon AC Furnace Filters 6 Pack new-releases Weight - 6 lbs

Weight - 6 lbs

These lightweight flats hold (1) 18-cell

Apply granules directly to the root zone at transplant for best results

Ease of Installation

These bulbs have been tested and developed to work perfectly with electronic ballast

17_1/2x23_1/2x1 MERV 8 Plus Carbon AC Furnace Filters 6 Pack new-releases Weight - 6 lbsNordic Pure Custom MERV 8 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