12x26_1/2x1 Exact MERV 7 Plus Carbon AC Furnace Filters 6 Pack lighting Stonewool Block

Stonewool Block

fish meal and naturally occurring organic material that is formed when organic matter decomposes

to save space in the grow room

This prevents the fruit fly from exiting the DiveJar

Now you can BUBBLE while you TUMBLE

12x26_1/2x1 Exact MERV 7 Plus Carbon AC Furnace Filters 6 Pack lighting Stonewool BlockNordic 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