Spalding 74307 Portable Basketball System with 52-Inch Acrylic Backboard 52-inch Acrylic backboard w/steel frame & board pad; Helix lift system; 3-piece 3.5-inch pole system; angled pole; 40-gallon Power Move base 52-inch Acrylic backboard w/steel frame & board pad 20 degree pole angle for maximum playability 40-gallon Power Move base fills with water or sand for stability Five-year limited warranty