Ducting Hose, Hose Inside Dia. 4 in, Hose Length 25 ft, Hose Tube Material TPE, Hose Reinforcement Type Helix, Hose Reinforcement Material Steel Wire, Hose Color Black, Vacuum Rating 28 Hg, Max. Working Pressure @ 70 F 25 psi, Temp. Range -50 Degrees to 285 Degrees F, Bend Radius 3.5 in