Juniper EX8208 Hardware Manual page 150

Figure 37: Adjustable Mounting Brackets for Four-Post Rack Installation
6. Position the right front adjustable mounting bracket at the desired position in the right side of the rack
opposite the installed left front bracket, so that it is on the same rack level as the left bracket. If the
right and left front brackets are not on the same level, the chassis will rest at an angle in the rack instead
of resting flat and level. Line up the right bracket's front screw holes with the holes in the rack. Use 4
mounting screws appropriate for your rack to attach the right front bracket to the rack.
7. Position the other rear bracket at the right rear of the rack on the same level as the right front bracket,
so that the rear bracket overlaps with the right front bracket. The screw holes for connecting the front
and rear brackets should overlap. Use 4 mounting screws appropriate for your rack to attach the rear
bracket to the rack.
8. Connect the right front and rear brackets (see
a. Insert 6 of the screws provided with the mounting brackets into the overlapping bracket holes.
b. Hand tighten the screws fully (to 12–16 in.-lb torque) using a number 2 Phillips screwdriver.
Figure 37 on page 150):
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