Central 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 System ... the drugery of vacuuming and give you a cleaner,healther indoor Environment,A central vacuum system include main power unit,piping,valves ... in super silent;the operation is more easy,keep sealed for life,humane open