6 Windows, jalousies, essentially of aluminium; sun-protection constructions; shutters, essentially of aluminium.
9 Control and/or regulating instruments and devices; early fire alarm instruments and devices.
11 Smoke and heat discharging equipment as well as control and regulating instruments and devices; mechanical air inlet and drawing-off devices, especially ventilators; naturally working air inlet and drawing-off installations, especially shutters, essentially of aluminium and/or plastic and/or glass; radiation and air-heating apparatus.
19 Transparent roof and wall light elements, light ducts; windows, jalousies, essentially of plastic and/or glass; sun-protection constructions; shutters, essentially of plastic and/or glass.
