Thorlabs offers overhead shelving options for optical tables as well as instrumentation shelving designed to allow control boxes to be placed near the equipment they control while minimizing their footprint on the optical table surface. Additional accessories include equipment for use with pneumatic vibration isolation systems for optical tables and optical breadboards, earthquake restraints, magnetic sheets to cover steel breadboard holes, and a kinematic periscope system. We also offer a range of enclosures, including breadboard enclosures, laminar flow enclosures, laser safety curtain systems, blackout curtain systems, and optical table enclosure frames.