This Spalding SuperGlass Scholastic Glass 48" Basketball Backboard is a regulation size unbreakable rectangular glass basketball backboard. This Spalding glass backboard is designed for collegiate and high school play. This backboard has 1/2" tempered glass with a 2" white border, 5 x 5 rim mounting pattern, a shooter's target and it is intended for indoor use only. This basketball backboard uses rubber sheathed mounting bolts to eliminate contact between metal and glass and has a pre-drilled frame for bolt-on backboard padding (not included).