This an enlarged version of the a-100 suitcase with 9 u or three rows of modules. as only one power supply is required this is the most economic version of the a-100 suitcase. apart from that the 9u version is identical to the 6u version.
outside approx. 460 (width) x 465 (height) x 175 (depth) mm, without cover and rubber feet
outside approx. 460 (width) x 490 (height) x 230 (depth) mm, with cover and rubber feet
inside: 3 x 84 hp x 3 u, usable depth for a-100 modules: approx. 80 mm in the power supply area (bottom right), resp. approx. 100 mm in the remaining area (measured from inner side of the front panel until end of the pc board of the module)
Info from Doepfer