12x14x1 Exact MERV 8 Plus Carbon AC Furnace Filters 6 Pack spl_dakine420 height extension kit gives you

height extension kit gives you the ability to increase your growing height from 6’7″ to 7’7″

A zipper front with a sealable storm flap helps keep contaminants from entering or seeping through exposed zipper seams

Super Blue lamps operate on 1000W high pressure sodium systems equipped with ANSI S52 ballasts (magnetic core & coil only)

Weight 14 lbs

12x14x1 Exact MERV 8 Plus Carbon AC Furnace Filters 6 Pack spl_dakine420 height extension kit gives youNordic 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