Order this backboard to replace broken or damaged backboards…3/8″ clear acrylic in 1.88″ aluminum frame with white border and shooter’s square • Use same bolts (included) to sandwich backboard between goal and extension arm (3″ x 4″ mounting pattern) • For residential use only • Bison does not warranty any backboard that is not installed on a compatible Bison pole system • Contact a Bison Product Specialist for compatibility questions. 12-year limited warranty.