IBM 8202-E4B Manual page 88

Note: The IBM 7014-T00, 7014-T42, 7014-B42, 0551, and 0553 racks meet all the requirements and
specifications.
Rack specifications
The general rack specifications are:
v The rack or cabinet must meet the EIA Standard EIA-310-D for 19-inch racks published August 24,
1992. The EIA-310-D standard specifies internal dimensions, for example, the width of the rack opening
(width of the chassis), the width of the module mounting flanges, the mounting hole spacing, and the
depth of the mounting flanges. The EIA-310-D standard does not control the overall external width of
the rack. There are no restrictions on the location of side walls and corner posts relative to the internal
mounting space.
v The front rack opening must be 451 mm wide + 0.75 mm (17.75 in. + 0.03 in.), and the rail-mounting
holes must be 465 mm + 0.8 mm (18.3 in. + 0.03 in.) apart on center (horizontal width between vertical
columns of holes on the two front-mounting flanges and on the two rear-mounting flanges).
The vertical distance between mounting holes must consist of sets of three holes spaced (from bottom
to top) 15.9 mm (0.625 in.), 15.9 mm (0.625 in.), and 12.67 mm (0.5 in.) on center (making each three
hole set of vertical hole spacing 44.45 mm (1.75 in.) apart on center). The front and rear mounting
flanges in the rack or cabinet must be 719 mm (28.3 in.) apart and the internal width bounded by the
mounting flanges at least 494 mm (19.45 in.), for the IBM rails to fit in your rack or cabinet (see the
following figure).
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