Chain and Sprocket safety gate models are designed primarily for continuous use and extreme material handling operations. Roly Safeti-Gates are a dual-gate system that secures the ledges of pallet drop areas. The two gates are interconnected so one gate is always in place to protect employees from the ledge. Chain and sprocket safety gates are designed to withstand high-use material handling operations in which repetitive full-case pallet handling occurs. Chain and sprocket rack-supported gates can be power-operated via push-button stations or radio frequency controllers. All units meet OSHA requirements. Powder-coated finish has safety green frames and safety yellow gates. Mezzanine Safeti-Gates, Inc. 174 Western Ave. Essex, MA, 01929-1110