The retaining bar for this hydraulic box dumper is adjustable in 3 inch increments. The dumper can rotate 135 degrees and can have a 45 degree dumping angle. The rotating can be stopped at any point to get a precise angle an individual wants. The power unit and electrical panel are located on the sides. The standard control are up and down push buttons. The Standard electrical panels are 230/460 volt, 60 hertz, 3phase with 120 volt controls, the Motors are rated for 208/230/460 volt and 50/60 hertz, and the hydraulic cylinders are double acting, 2500 psi rated, and come with a velocity fuse for emergency locking.