26x30x1 MERV 13 Plus Carbon AC Furnace Filters 6 Pack Growing Media resistance is not likely to

resistance is not likely to develop

Pure water's not magic

KDF85/Granulated Catalytic Activated Carbon removes up to 99% of chlorine and chloramines

Adjustable fuzzy logic mode for regulator/CO2 tank control or standard mode for CO2 generator control

Both units are equipped with features like a safety tip-over switch

26x30x1 MERV 13 Plus Carbon AC Furnace Filters 6 Pack Growing Media resistance is not likely toNordic Pure Custom MERV 13 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