System 106 flush-mounted housing, 5-way The housings and installation boxes can be installed as soon as the facade has been completed. Housing available in an anthracite-painted metal alloy: robust materials that ensure durability. Features: Vertical and horizontal installation enables optimal adaptation to the installation location. Suitable for use in facades with thermal insulation composite systems. Notes: System 106 flush-mounted housing, 1-way, only for use with door station module and System 106 Keyless In components.