... vacuum cleaner host machine,Amtek Motor,bagless power :1650w service distance:50m maximum inlets:6 central vacuum cleaner host machine with Ametek Motor,Built-in Vacuum ... drugery of vacuuming and give you a cleaner,healther indoor Environment,A central vacuum system include main power unit,piping,valves ... :the suction ability is many times as the normal vacuum;drain the gas out of the room directly;it ...