Rack Cabinet : Any enclosure intended to house electrical equipment mounted to cabinet rails mounted within the cabinet. Most rack cabinets house chassis 19" wide. They are available in several heights
Department of Energy AREA SAFT, DOE Handbook, Electrical Safety (Appendix B), Acronyms and Definitions, DOE-HDBK-1092-98, D.C. 20585, USA 1998. http://energy.gov/sites/prod/files/2013/07/f2/hdbk 1092.pdf, (Electr Sfty - Amer) {43}