Up for sale is an Appco FS40 Sand King Frac Sand Silo w Conveyors for Oil Field. Powered by a 6 cylinder diesel. Has 4 storage bins and an underbody conveyor. Rear discharge conveyor. Spring suspension. 10879 hrs. on engine. Digital display management. Is 63 ft. long and 11 ft. wide oversized load. Appco Model FS-40 Frac Sander Unit is a trailer mounted sand storage and delivery system for feeding proppant to the sand hopper of a fracturing blender. This unit uses a corrugated sidewall conveyor belt with four (4) proppant compartments with a rear mounted discharge chute. This unit is designed for operation in the oilfield environments in temperature ranges from 0 degrees C to 50 degrees C (32 degrees F to 122 degrees F). This unit is self-contained for unit operation and shall be designed to work in a complete frac spread for fracturing operations. Please take a good look at the pictures and call with any questions.