The Contractor Floor Burnisher is 21 inches wide. It is easy to move from job to job and constructed for long life. Run time is 5 to 6 hours per propane cylinder. Emissions are protected by a three-way catalytic muffler and automatic shutdown system. Electric clutch or kill switch are optional. All machines come standard with service alert (hour) meter, 360° floating swivel spin-on pad driver, adjustable handle, and steel safety-fill fuel cylinder with overfill prevention device (OPD) (UL and DOT approved).Kawasaki Engine 13 hp (431cc)110 Volt electrical starterNote: All engines exceed Environmental Protection Agency (EPA) and California Air Resource Board (CARB) regulations for exhaust emissions.