Cylinder Bracket Number of Cylinders Held 3 Compatible Cylinder Diameter (Maximum) 12 in Compatible Cylinder Diameter (Minimum) 4 in Cylinder Securing Mechanism Strap with Cinch Buckle Bracket Material Steel Overall Width 35 5/8 in Overall Height 2 3/8 in Overall Depth 3 7/8 in Finish Powder Coated Mounting Location Vehicle Wall For Use With Gas Cylinder