The Briggs & Stratton 125kW Fortress Standby Generator is listed UL 2200. It has a rugged seven-gauge steel base and is protected by an enclosure made from Galvannealed Steel. The generator is powered by EPA Certified 1800 RPM industrial grade PSI engine. To reduce noise output the generator has sound attenuated enclosures. The 125K Fortress Generator has a Marinco 6A battery charger, a DSE 7310 MKII controller, high performance, and durable alternator. This generator has an industry leading 3 year standard limited warranty with 3 years parts, labor and travel.