25x28x1 MERV 7 Plus Carbon AC Furnace Filters 6 Pack grow-system/-trays/-reservoirs 8 x Matrix | 9"

8 x Matrix | 9" x 10

For tank operation: insert the reservoir and set your target humidity on the LED panel

Precision alignment of cutting and anvil blade is due to adjustable locking segment

The included HumTea brewkit will produce 5-gallons of our concentrated HumTea that may be diluted into a maximum of 250 gallons of water for application

25x28x1 MERV 7 Plus Carbon AC Furnace Filters 6 Pack grow-system/-trays/-reservoirs 8 x Matrix | 9"Nordic 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