Supply and installation of Automatic Vertically Retractable Acoustical Wall(s) as shown on the architectural drawings. All necessary hardware, seals, lifting machinery, electrical controls are included. Related Work A. The main support steel beam for the wall, as well as the miscellaneous support steel for the lifting machinery for the Automatic Vertically Retractable Acoustical Wall – Section 05 5000 – Metal Fabrications. B. Ceiling storage pockets along axis of Automatic Vertically Retractable Acoustical Wall – Section 09 2900 – Gypsum Board. C. Bulkheads and sound insulation above, below, and in the fixed walls at both ends of the Automatic Vertically Retractable Acoustical Wall, as per ASTM E557 – Section 07 2100 – Thermal Insulation. D. All site wiring and connections for main power, including disconnect switches at each motor location. All site wiring and connections for control, including installation of key switches – Division 26 - Electrical.