Awning Crank Compression Height Adjustment Mechanism allows rim height to raise and lower 7" to 10" * Backboard is 32" x 48" and made of 3/8" competition fully-tempered glass mounted on an exclusive H-Frame design made of 1-1/2" structural steel tubing to provide precise and consistent ball response * Corrosion-Resistant paint process of one primer coat and two coats of baked on acrylic-enamel provides a high-gloss finish * 2-1/2 ft Extension from wall to front of backboard.