Spec Sheet Preview: The Alpha Communications® model BBD905 is a back box designed for surface mounting on a table or desk. Depending on personal preference, the BBD905 back box can be used for either horizontal or vertical mounting of various Ring stations and/or apparatus. Two (2) one-half inch electrical knockouts are provided for various mounting positions. The BBD905 is painted in a Black vinyl texture to resist marring. Removable aluminum side panels allow for ganging multiple boxes together. The side panels are made of 1/8&quo …