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Wall or ceiling element of wood or plastic material is provided at least on one side with regularly distributed protrusions whose outermost planes, points or edges lie in a common plane
Wall or ceiling element of wood or plastic material is provided at least on one side with regularly distributed protrusions whose outermost planes, points or edges lie in a common plane
The wall or ceiling element (1) of wood or plastic material is provided at least on one side (2) with regularly distributed protrusions (4) whose outermost planes, points or edges (4a) lie in a common plane.
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