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Udsugningshaette med et sugerum med mindst en tilsluttet afgangsluftkanal og mindst en kanal til tilfoersel af et opvarmeligt medium, fortrinsvis friskluft
Perfeccionamientos en los procedimientos y dispositivos paramantener practicamente constante a diversos regimenes de funcionamiento el rendimiento de aparatos a evacuacion for- zada comportando un dispositivo de combustion.