Select from lengths ranging from 16 to 40 feet. Both the eight-foot width and the six-foot six-inch height can be altered. Like all Featherlite trailers, the Model 8121 is all-aluminum. It features several methods of loading and unloading, including a full-swing endgate with a slide-by on the driver’s side and a full opening center gate featuring a slider and slam latch. In emergencies, livestock can be unloaded through a curbside escape door. Other safety features include wraparound LED lights and Featherlite’s watertight wiring harness.