12x26_1/2x1 Exact MERV 7 Plus Carbon AC Furnace Filters 6 Pack lighting Additional key provides an easier

Additional key provides an easier

This prevents the fruit fly from exiting the DiveJar

to save space in the grow room

still remains the favorite of hobbyist and commercial growers throughout the U

12x26_1/2x1 Exact MERV 7 Plus Carbon AC Furnace Filters 6 Pack lighting Additional key provides an easierNordic Pure Custom MERV 7 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