... service distance:50m maximum inlets:6 central vacuum cleaner host machine with Ametek Motor,Built-in Vacuum System....will change your cleaning ... a cleaner,healther indoor Environment,A central vacuum system include main power unit,piping,valves and vacuum fittings,Advantages:the ... easy to mount when built or decorate the house;imported motor,imported stainless steel;the host have muffler,run in super ...