Altech DIN Rails comply with DIN 50045, 50022 and 50035 Standards. DIN Rails have been accepted throughout the world, allowing the designer to mount a wide variety of control components on the same rail. The use of DIN Rails enhances design capabilities, saves space and reduces labor. All Altech Standard rails are made of steel with zinc plating and chromate passivation. Type Top Hat Slotted/Unslotted Slotted Size 1.378" W x 0.295" H (35.00mm x 7.50mm) Length 78.740" (2000.00mm) Thickness 0.039" (1.00mm) Material Steel Plating Zinc