2021 SIDUMP'R, 2021 SDR550-6049 Semi-Trailers - Dump Trailers - Side, 5 Axle Super Side -Axles: 1st - Steerable Lift, 2nd-4th - Fixed, 5th - Steerable Lift. 38' Tub, 52' L Bolt-On Push Block Aero Side Kick 2 Tarp System - Color Black, Air Ride Suspension, Steel Composition, , , L x W x H: 50 x 102 x