This Schaefer Quick-Connect Duct extends 25 feet to ventilate hard-to-reach areas. When the job is finished, it collapses into its own carrying bag for easy carrying and storage. Accessory Type: Space ventilator accessory, Compatible With Item Number (s): 31483, Dimensions L x H (in.): 300 x 12, Material Type: Vinyl/woven polyester, Temperature Range ( deg F): -20-180, Dimensions L x W x H (in.): 300 x 12 x 12, Length (ft.): 25.