IBM PC Server/Enterprise Racks 42S - Manual (Page 108)

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Hardware Maintenance Manual: IBM PC Server/Enterprise Racks
Fixed shelf
Note: A fixed shelf can support a device or option weighing up to 45kg (100 lbs).
To install a fixed shelf:
1. Determine the location for the fixed shelf within the rack.
2. Secure the threaded mounting brackets c1d to the rear of the shelf; then, secure
the brackets to the rack with two screws and clip nuts per bracket.
3. Secure the front of the shelf c2d with two screws and clip nuts.