The AmeriGlide Ultra Stair Lift is an interior seat lift designed for use by individuals with balance, lower extremity, or mobility disabilities or arthritis. The lift has a plastic seat and a half-horsepower motor with rack and pinion drive. The seat and chassis assemblies come pre-assembled. The lift comes with two wireless call/send remote controls and one hand-held/pendant control. Safety features include a seat belt and footrest obstruction sensor, swivel seat, and end-of-track safety sensors. The lift is available for use on the left or right side of a staircase and comes with measurement and installation manuals, POWER: Uses rechargeable battery. DIMENSIONS: Standard track is 16 feet long; tracks up to 32 feet long are available. CAPACITY: 300 pounds. WARRANTY: 5-year drive train warranty; 2-year parts warranty.