KFI Premium Vinyl Ducting Size:10 in x 25 ft Calibration is fast and easy

Calibration is fast and easy with knobs located on the front panel of the instrument

Vent Size: 3x8"

Like Grow A and Grow B

Do not get in a situation where you run out of CO2

Dimension: 4'x4'x6

KFI Premium Vinyl Ducting Size:10 in x 25 ft Calibration is fast and easyKootenay Filter KFI Premium Vinyl Ducting Kootenay Filter KFI Premium Vinyl Ducting A high quality vinyl ducting that works great for various ventilation needs in your indoor grow space. KFI Premium Vinyl Ducting is flexible and made with a high tensile wire helix between two layers of aluminum ducting and an outer layer of PVC. Includes 2 ducting clamps 25 feet 7. 6m Available in 4", 6", 8", and 10" sizes.