Official size 54” x 39” die cast aluminum with continuous reinforcing ribs on the backside make this our most durable fan-shaped backboard. Perimeter flange and ribs at critical goal mounting area are a full 1-1/2” thick for maximum strength and true ball rebounding. White powdercoat finish with official orange perimeter and target markings give this a neat, clean appearance. Patent No. 5,207,419