Used East Tri Axle Dump Trailer for sale. Features: 28 ft. Dump Trailer with Forward Lift Axles, Aluminum Frame, Coal Chute, Roll-over Tarp, 2-way Tailgate, and more. Hundreds of new and used trucks, trailers, and parts for sale at Coopersburg & Liberty Kenworth. Three convenient locations: Coopersburg, PA (near Allentown), Swedesboro, NJ (near Philadelphia), and TRP Parts (Pottstown, PA).