BS EN 60297-3-109:2016
电气设备和电子设备的机械结构. 482.6 mm (19 in) 系列的机械结构尺寸. 嵌入式计算设备用机箱的尺寸
Mechanical structures for electrical and electronic equipment. Dimensions of mechanical structures of the 482,6 mm (19 in) series. Dimensions of chassis for embedded computing devices