Figure 34: Distances Between The Brackets On The At-Gs924Mpx, At-Gs948Mx, And At-Gs948Mpx Switches - Allied Telesis AT-GS924MX Installation Manual

Chapter 4: Installing the Switch on a Wall
AT-GS948MX Switch
80
Figure 34. Distances Between the Brackets on the AT-GS924MPX,
AT-GS948MX, and AT-GS948MPX Switches
The recommended minimum dimensions of the plywood base are listed
here:
Width: 50.8 centimeters (20 inches)

Height: 55.9 centimeters (22 inches)

Thickness: 5.1 centimeters (2 inches)

The dimensions assume the wall studs are 41 centimeters (16 inches)
apart. You may need to adjust the width of the base if the distance
between the studs in your wall is different from the industry standard.
AT-GS924MPX and
AT-GS948MPX Switches