DESCRIPTION 2017 MAC End Dump Trailer (GP12123, Unit 509), MAC end dump trailer, approx. 28' length, aluminum frame, spread axle, air ride suspension, single hoist, Air Weigh trailer scale, tailgate & suspension dump valve, lift axle valve, AERO electric roll tarp, 11R24.5 tires, aluminum wheels, GVWR 80,000 pounds. Serial Number: 5MADA2823HC040530 Notes: