Wall bracket for accessories or peripherals compatible with the standard rack 19 It is a black metal frame, 7U high (7U x 3 holes per U) and 300 mm in depth.It has 4 holes for screwing/fix the frame to the wall, it also includes cable slots in the rear part, one of the sides has a hinge which makes the rack component 19 installed, to facilitate installation.n and the rear wiring. Very economic solution that solves seen installations that only need a patch-panel, a switch or similar. It is possible to arrange several frames, one on top of the other to achieve greater height units.