ducts of metal for ventilating installations; grilles of metal for ventilation openings; ventilating ducts of metal

ventilation apparatus; apparatus for ventilation; ventilating fans for industrial purposes; ventilating apparatus; apparatus for ventilating; apparatus and instruments for ventilating purposes

Channels of metal for transmitting air for ventilation; Ventilation grilles of metal for fitting in doors; Ventilation grilles of metal for fitting in windows

Apparatus for exhausting fumes (ventilation); Apparatus for exhausting gases (ventilation); Apparatus for extracting fumes (ventilation); Apparatus for extracting gases (ventilation); Industrial ventilation apparatus; Process ventilation apparatus; Sound absorbers being parts of apparatus for ventilation; Ventilation apparatus; Ventilation installations

ducts of metal for ventilating installations; grilles of metal for ventilation openings

ventilation installations; ventilation apparatus; ventilating apparatus; apparatus for ventilating; air cooling apparatus