BS EN IEC 60297-3-110:2018 Mechanical structures for electrical and electronic equipment. Dimensions of mechanical structures of the 482,6 mm (19 in) series Residential racks and cabinets for smart houses

Dimensions
Mechanical components
Storage equipment
Racks
Printed-circuit boards
Interchangeability
Electromechanical devices
Electronic equipment and components

Link: BS EN IEC 60297-3-110:2018 Mechanical structures for electrical and electronic equipment. Dimensions of mechanical structures of the 482,6 mm (19 in) series Residential racks and cabinets for smart houses
Source: BSI Standards