12x26_1/2x1 Exact MERV 8 Plus Carbon AC Furnace Filters 6 Pack Growing Media Over heat protection : Yes

Over heat protection : Yes

Hold reading function and low battery warning

and provides up to 48% additional high quality light

Wilts & Blights

indoor grows

12x26_1/2x1 Exact MERV 8 Plus Carbon AC Furnace Filters 6 Pack Growing Media Over heat protection : YesNordic 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