NuTone has introduced the CV400 Compact Power Unit

Features include:

• 2 yr warranty
• 1 stage, 120 volt motor, 1.74Hp, delivers 400 air watts of power
• Durable, dent resistant polymeric debris bucket with easy on/off snap release (Model 391 filter bag required)
• Single intake port
• On/Off power switch
• Illuminated power indicator
• UL approved

More information is available on the NuTone web site (www.nutone.com.  Information on all Nutone central vacuum systems is available there as well. Although info is there about the CV350 and CV353 units, they are discontinued and no longer available.
Nutone Cleaning Tool, CK250 can be used with the new unit, CV400.