This Chassis controls up to 12 RJV 12×1 modules, 6×4 modules, 4(1×2) modules or specialty modules. Add Switch Modules  to complete the system.

Dimensions:
19″ Rack Mount (483 mm)
15″ deep (381 mm)
10.5″ (6 RU) high (270 mm)
Weight: 20 to 35 lbs (9 to 16 Kg) max
AC Power : 150 Watts max. 110/220 selectable.

link to switch module selector