Spalding 52-Inch In-Ground Basketball System with Acrylic Backboad In-ground basketball system with 52-inch-wide acrylic backboardHeavy-duty steel frame; Pro Slam breakaway rimPro Glide lift system adjusts from 7.5 to 10 feet in 6-inch increments3-piece, 3.5-inch round steel pole; 16-inch board offsetAuthentic backboard pad provides added protection against injuries The Spalding 88307PR in-ground system features a 52" steel framed acrylic backboard with an authentic style board pad. The Pro Slam rim has breakaway action with steel rams. The Pro Glide lift system provides height adjustment from 7.5' to 10' in 6" increments. The included pole is a 3 piece, 3.5" round pole. The system also includes a ground sleeve for easy installation and removal.Designed to install in a driveway or