DIN Mounting Channel, IEC, Channel Description Galvanized Steel, Prepunched, Rail Size (mm) 35, Mounting Hole Width (In. ) 0.71 in, Mounting Holes O. C. (In. ) 0.98 in, Length (M) 2, Width (mm) 35, Height (mm) 7.5, Mounting Hole Width (mm) 18, Mounting Holes O. C. (mm) 25, Standards EN 50022/DIN 46277-3, Length 78.0 in, Height 0.29 in, Width 1.38 in