This standard aims to establish the connection characteristics of wall-hung toilets, without a supported cistern, whatever the materials with which they are manufactured. It does not refer to vessels with siphonic suction. Note - Only the dimensions of the quoted parts must be respected. The schematic form of the devices depicted in the sketches is provided for better understanding of the drawings; it does not prejudice the final shape of the devices which is left to the initiative of the manufacturers.
UNI EN 38-1978 history
1978UNI EN 38-1978 Water and sand filled hanging vessels without support box. Fixed connection height