Crux 3 is the wall cabinet of the barpa range of cabinets. It is excellent for an "under-the-desk" cabinet for small implementations or test networks. The Crux 3 comes with 8U space and has the dimensions: 300 x 441 x 300mm (width x height x depth). 
 
The best way to get the most of this cabinet is with barpa accessories, that are sold separately.