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Marking the Rack
1.
Determine where you want to place the bottom of the PowerApp appliance.
CAUTION: If you are installing more than one PowerApp appliance, install
the first appliance in the lowest available position in the rack.
2.
Mark the upper and lower-mounting positions on the two posts.
Each 1-U (1.75-inch) vertical space has three holes, with center-to-center spacing
between holes (beginning at the center of the top hole of a 1-U space) of 0.625,
0.625, and 0.5 inch (see Figure 1-2).
1.75 inches (1 U)
Figure 1-2. Two-Post Open-Frame Relay Rack 1-U Hole Spacing
0.5 inch
0.625 inch
0.625 inch
0.5 inch
Rack Installation Guide
1-3
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