DIN 18516-4
DIN 18516-4 Back-ventilated, non-loadbearing, external enclosures of buildings, made from tempered safety glass panels; requirements and testing
standard by Deutsches Institut Fur Normung E.V. (German National Standard), 02/01/1990
standard by Deutsches Institut Fur Normung E.V. (German National Standard), 02/01/1990