U-Shaped Mailroom Layout Configurations are frequently used in interior rooms with no windows. This configuration includes a supervisor workstation and allows for the most efficient use of wall space while leaving the center area free for movement and traffic. It also provides the maximum number of sorting openings and storage space for its footprint. This all metal 14 and 16 gauge steel workstation can support up to 1500 lbs. Includes Supervisor Workstation and 240 mail slots.