21_1/2x23_3/8x1 Exact MERV 7 Plus Carbon AC Furnace Filters 6 Pack lighting Temperature and humidity control to

Temperature and humidity control to monitor and adjust temperature and humidity set points 24/7/365

3-Year Warranty – FloraFlex backs this controller with a 3-year warranty

Improved “re-wettability” able to more easily increase water concentration in the substrate

Fortified with six trace elements plus humic acid and Norwegian kelp extract to help produce heavy weight flowers and buds

Born out of a need for simplicity in application and functionality

21_1/2x23_3/8x1 Exact MERV 7 Plus Carbon AC Furnace Filters 6 Pack lighting Temperature and humidity control toNordic 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