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Table 103: Mounting Hole Locations for Installing a MX2008 Chassis in a Four-Post Rack or
Cabinet (continued)
Hole
Distance Above U Division
11
6.13 in. (15.6 cm)
The holes in the front-mounting flanges are spaced at 3 U (5.25 in. (13.3 cm)).
Installing the Four-Post Mounting Shelf
A mounting shelf is required for installing the router in a four-post rack or cabinet. The shelf is not required
for installing the router in an open-frame rack.
To install the four-post mounting shelf (see
1. Slide the shelf between the rack rails, resting the bottom of the shelf on the rack rail supports. The
shelf installs on the front of the rear rails, extending toward the front of the rack.
2. Partially insert screws into the open holes in the rear flanges of the four-post mounting shelf.
NOTE:
Depending on the type of rack or cabinet you have, cage nuts might be required.
3. Tighten all the screws completely.
4. On the front of each front rack rail, partially insert a mounting screw into the holes in each ear of the
four-post mounting shelf.
5. Tighten all the screws completely.
3.50 U
Figure 77 on page
244):
243
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