how big is pro size backboard
1/2 inch thick by 42 inches high by 72 inches wide. The official backboard in the NBA measures 3.5 feet high and 6 feet wide. Usually, it is made from tempered glass or fiberglass. Somewhere at the middle part of the backboard is a rectangle, which is used primarily for making bank shots. It measures 1.5 feet high and 2 feet wide.