Designed for the highest level of competition, our Unbreakable Short Glass Backboard meets the demands of today's stronger, faster, more physical athletes. The rim is mounted "off glass", allowing the support structure to absorb over 98% of stress from rim contact without transferring it to the glass. Exclusive goal-leveling feature built into support structure makes setup easier and more precise. Polished aluminum extrusion framework and high-strength steel support structure offer greater stability. Official 42" x 72" size. Four-corner 351/2" x 62" mounting bracket spacing. Backboard padding sold separately. Covered by an unconditional lifetime warranty.