Abstract: A thermoplastic frame for holding acoustical material has extruded square plastic tubing that is inserted or press-fit onto corner connectors and T-connectors to make an open ended enclosure that houses the acoustic material. Once the frame is assembled, the acoustic material is inserted in the open end of the frame.

Abstract: A primary communication channel for drive-in customers performing financial transactions with bank teller while customers are in their cars from the drive-through lanes. This telecommunication system is a conduit secured line telephone receiver for each separate lane and is interconnected with corresponding headsets. The total design prevents cross-talk, amplified overhead conversations to other customers in their cars or to persons walking perimeter of drive-through banking areas. Each customer is provided with a complete primary communication channel for financial transactions Preventions of customers being identified as potential victims of financial exploitations through car tag associations with amplified conversations. Improved apprehension of person attempting to rob bank from bank teller's transaction window of drive-in area.