Kootenay Filter KFI Classic Aluminium Ducting, 20 Inch x 25 Feet Ducting Size:14 in x 25 ft So if you want thick

So if you want thick hard stems

which is important for monitoring plant physiology

easy to use formula of its type

Color-coded Flow ID

Four (4) USB ports are provided for data logging to memory stick as well as for other optional devices such as the WiFi module

Kootenay Filter KFI Classic Aluminium Ducting, 20 Inch x 25 Feet Ducting Size:14 in x 25 ft So if you want thickKootenay Filter KFI Classic Aluminum Ducting A high quality aluminum ducting that works great for various ventilation needs in your indoor grow space. A flexible dual layer aluminum construction and high tension wire helix makes this ducting both durable and easy to work with. Includes 2 Ducting Clamps 25 feet 7. 6m Available Sizes: 4", 10", 12", 14" and 20"