Lifetime Portable Basketball System with Shatterproof Backboard 52" Shatterproof Makrolon Polycarbonate backboard gives you the look and feel of pro glass! All-weather resistant, designed to withstand the harshest elements; Backed by a 5-year limited manufacturer warranty Power Lift height adjustment mechanism easily adjusts from 7.5 to 10 feet Solid-steel Slam-It Rim with double-compression springs and welded net hooks 35 Gallon base provides stability and portability; Can be filled with water or sand