Spalding NBA Portable Basketball System - 44" Polycarbonate Backboard Residential portable basketball system with 44-inch wide poly-carbonate backboard 37.5-gallon base fills with water or sand for stability 5/8-inch solid steel Slam Jam breakaway rim; Pro Glide lift system for adjustment from 7.5 to 10 feet in 6-inch increments Three-piece steel pole (3.0 inches round) Five-year limited warranty