Historical
BS EN 31:1999
Pedestal wash basins. Connecting dimensions (British Standard)
This standard specifies the connecting dimensions of pedestal wash basins, regardless of the materials used for their manufacture. This standard does not refer to appliances of actual width of less than 530 mm or more than 750 mm. Note: Only dimensions are compulsory. The shape of the appliance in the figures is for illustration only; it in no way prejudices the final shape of the appliance which is left to the initiative of the manufacturer.
British Standards Institution [bsi]