Motorola Symbol MicroKiosk MK22 0 Series Reference Manual page 37

Vertical Cable Run
Cable Routing
Figure 2-4
Recessed Wall/Kiosk Mounting
To recess the MK22X0:
Cut an opening in the wall or MicroKiosk, 8.63" minimum height x 8.0" minimum width.
1.
Place the back housing into the opening, following the instructions in
2.
See Figure 2-2 and Figure 2-3 on page
NOTE Recessed mounting may degrade wireless network performance.
2-4. Symbol does not provide hardware to support this installation.
Installation
Using the Wall Mount Kit on page
2 - 5
2-3.