Industrial Ducting Hose, Hose Inside Dia. 4 in, Hose Length 25 ft, Hose Tube Material PVC, Hose Reinforcement Type Helix, Hose Reinforcement Material Wire Helix - Reinforced, Hose Color Blue, Vacuum Rating 25.00 in Hg, Max. Working Pressure @ 70 F 18 psi, Temp. Range -20 Degrees to 180 Degrees F, Standards UL-94V-0, Bend Radius 3.4 in