通向房屋和建筑物。在建筑物中，它们用于密封外部环境，分隔房间，防火以及气候和隔音。在确定门间隙的尺寸时，必须考虑具有适当安全裕度的工业车辆的总高度。

        Passage to premises and buildings. In buildings they are used to seal off the external surroundings, for partitioning rooms, for fire protection as well as for climate and sound insulation. When dimensioning the gate clearance the overall height of the industrial truck with an appropriate safety margin must be considered.