The SaltDogg® PRO4000HCH is a 4 cubic yard poly hopper spreader in the PRO4000CH conveyor chain family, sized for commercial and municipal fleets. It works with dump trucks and flatbeds rated at a minimum 17,500 lb GVW and spreads bulk salt, sand or a 50/50 sand/salt mix. The high flow 14-1/2 in. conveyor chain feeds an 18 in. spinner that casts material 5 to 30 ft. Double-wall poly hopper that will not rust or dent, on a stainless steel frame 12V DC electric or hydraulic drive with independent conveyor and spinner motors 14-1/2 in. all-steel pintle chain conveyor with 1/4 in. bars and a stainless trough In-cab control of independent auger and spinner speeds; vibrator control on the electric version only Vibrator, top screens, inverted V and tie downs included Works with bagged #1 rock salt; backed by a 2 year warranty and made in the USA Specifications Hopper material: Polyethylene, black Trough material: 304 stainless steel Feed mechanism: 14-1/2 in. pintle chain conveyor with 1/4 in. bars Spinner: 18.00 in. polyurethane Spreading width range: 5 to 30 ft Gearbox ratio: 20:1 Overall dimensions: 114.80 in. L x 74.00 in. W x 43.50 in. H