... Special high-temperature flame-retardant sound insulation sponge 1.Cummins engine, Marathon alternator, Smartgen digital controller.2.CE ... One year warranty6.Ultra Silent or open frame. Cummins Gensets:POWERTEC Cummins series Genset 50HZ, 400V/230V, 3PH4WModelPrime Power ... Standby Power CUMMINS EngineMARATHON AlternatorPDC22S20/2522/284B3.9-G2GM-20-4PDC33S30/3833 ...