Industrial Duct Hose Hose Inside Dia 4 in Hose Length 25 ft Hose Tube Material Fiberglass Neoprene Hose Reinforcement Type Helix Hose Reinforcement Material Steel Wire Hose Color Black Vacuum Rating 25 Hg Max Working Pressure @ 70 F 10 psi Temp Range -20 Degrees to 180 Degrees F Standards UL94V-O Bend Radius 3.7 in