QualArc introduces: "The Regency Collection" of decorative CBU mailboxes. Builders, architects, and developers have long been asking for an attractive cluster mailbox. The Regency Collection fills this need by converting a standard USPS collection box unit into an elegant mail center. Constructed of cast and extruded aluminum, the Regency will add curb appeal to any residential or commercial development. Some existing CBUs can be converted to the Regency style by purchasing the top and pedestal separately. Patent #D528,734. USPS approved.