Upgrade your gym with the first 48" x 72" glass backboard designed to virtually eliminate potential board breakage on old structures built for 48" tall backboards. 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. Polished aluminum extrusion framework and high-strength steel support structure offer greater stability. Four-corner 41-1/2" x 62" mounting bracket spacing. Backboard padding sold separately. Covered by an unconditional lifetime warranty.