Forms Part 1 of the third edition of IEC Publicatin 297. Applies to panels and racks for all applications based on 482.6 mm practice. Specified are the panel dimensions and tolerances.
IEC 60297-1:1986 history
1986IEC 60297-1:1986 Dimensions of mechanical structures of the 482.6 mm (19 in) series. Part 1 : Panels and racks
IEC 60297-1:1986 Dimensions of mechanical structures of the 482.6 mm (19 in) series. Part 1 : Panels and racks was changed to IEC 60297-3-100:2008 Mechanical structures for electronic equipment - Dimensions of mechanical structures of the 482,6 mm (19 in) series - Part 3-100: Basic dimensions of front panels, subracks, chassis, racks and cabinets.