Spalding 54-Inch In-Ground Basketball System with Acrylic Backboard 54 x 32 steel framed acrylic backboard. 4MM thick acrylic backboard for superior rebound. U-Turn lift system provides infinite height adjustment from 7.5' to 10'. Three Piece, 4 Square steel pole allows for maximum stability. Ground sleeve anchor system allows for easy installation. Backboard has 2' offset from pole. Arena Slam Breakaway rim and authentic style blow-molded backboard pad included for recreational level of performance