A quick-lift grip and strong springs handle the height change here, so moving the rim through its 10 levels takes one hand rather than a wrench. Three tubes put the ring between 8 and 10 feet; drop to 2 tubes and the range falls to 4.7 through 6.7 feet for younger players. The 44-by-29.5-inch PET backboard is thickened, shatterproof and wrapped at the edge, with a Y-shaped backrest and 2 shock-absorbing springs behind it. Its PE base measures 35.5 by 23 by 6 inches and takes 15.3 gallons of water or 143.3 pounds of sand, while the triangular frame spreads the load. The finished system weighs 54 pounds. A built-in ball holder is molded into the base, which keeps practice balls off the driveway between sessions and out from under car tires.