Material lifts use telescoping masts to lift large objects and position them in high places. Also known as equipment lifts, duct jacks, or Genie lifts, they have forks or platforms that can hold ductwork, HVAC equipment, plumbing, lighting rigs, trusses, pallets, and containers. These wheeled vehicles have bases that fold up when not in use to save space when transporting them with a vehicle. Material lifts are used for installation, maintenance, construction, and live-event applications. They are also sometimes used for moving and lifting equipment in warehouses and stockrooms. Material lift accessories include optional items that allow the lifts to hold a wider variety of items, stabilize the lifts during use, or provide power to the lifts.