IBM 9008-22L Site And Hardware Planning page 48

Figure 4. Caster and leveler locations
Note: Rack units are large and heavy and are not easily moved. As maintenance activities require access
at both the front and the back, extra room is needed. The footprint illustration does not show the radius of
the swinging doors on the I/O rack. A service clearance of 915 mm (36 in.) needs to be maintained on
front, rear, and sides of the I/O rack.
Feature code (FC) ERG0
FC ERG0 is an optional rear rack extender that can be used for 7014-T42 racks. The extender is installed
on the rear of the 7014-T42 rack and provides 203 mm (8 in.) of extra space to hold cables on the side of
the rack and to keep the center area clear for cooling and service access.
34 Power Systems: Site and hardware planning