The system takes occupies 3 units of rack space in standard enterprise racks and maintains a shallow depth to allow installation in smaller cabinets and sound damping racks.
The exact dimensions are:
Height 3 RU (rack units) - 5.25"
Depth 23" deep inclusive of handles and cord retention clips - 21.5" in the rack behind the rails
Width standard rack width - 19" (17.5" between the rails)