Buyers Products SaltDogg PRO4000CH Series Poly Hopper Spreaders are a powerful spreader designed for commercial and municipal use. The spreader works with dump trucks and flatbeds with a minimum 17,500 GVW (gross vehicle weight). The 4 cubic yard spreader handles bulk salt, sand, or a 50/50 salt/sand mix. Its electric-powered design means quieter operation that doesn't require refueling or engine servicing, giving you more time on the road. The hydraulic version provides the extra power needed for municipal applications. A PRO Series spreader is an investment made to last. The double-wall, lighter weight, all-poly hopper won't rust or dent. A simple cleaning makes it look like new. The spreader is supported by a corrosion-resistant stainless-steel frame. An inverted V eases start up and works with the included 400 lbs. vibrator to break up clumps and keep material flowing. The all steel 14-1/2 in. pintle chain conveyor with 1/4 in. bars, driven by a 3/4 HP, 12V gear motor or 3.17 CI hydraulic motor, feeds material at a smooth, steady pace. An 18 in. polymer spinner, powered by an independent 1/2 HP, 12V motor or 3.17 CI hydraulic motor, casts material 5-30 ft. The adjustable chute has an open trough and stainless-steel spinner shield. The spinner assembly is easily removable for cleaning and storage. Intuitive in-cab controls for the electric version let you independently manage conveyor and spinner speeds and turn the vibrator on and off with the flick of a switch. The spreader also comes standard with two steel top screens and a vinyl tarp with tie down kit.