UNE-EN 60297-3-105:2009
電子設備機械結構 482.6 毫米（19 英寸）系列機械結構尺寸 第3-105部分：1U 高機箱的尺寸和設計方面
Mechanical structures for electronic equipment - Dimensions of mechanical structures of the 482,6 mm (19 in) series -- Part 3-105: Dimensions and design aspects for 1U high chassis (Endorsed by AENOR in March of 2009.)