Theatre suction unit consists of two reusable 2000 ml shatter resistant bottle, each made up of polycarbonate material & fully autoclavable at 134°C (273.2°F). A vacuum regulator with instant ON / OFF switch & a three way selector switch with an option to operate wither - Left, Right or Both. All the above items will be mounted on a powder coated aluminium trolley with free moving castor wheels to prevent rust.