Aluminum 5052 Continuous Hinge without Holes, Unfinished, 0.035" Leaf Thickness, 1-1/2" Open Width, 1/16" Pin Diameter, 1/4" Knuckle Length, 4' Long (Pack of 1) Surface-mounted for applications requiring continuous support along the full length of the hinge, such as hollow metal doors and frames, and for use with wood and aluminum Aluminum 5052 is weldable, stronger than aluminum 3003, and more corrosion resistant than steel and aluminum 3003 No holes allow hinge to be spot welded in place or drilled for use with screws and rivets Unfinished for projects with less exposure to corrosive environments