IBM NetBAY25 Planning Manual page 24

The internal dimensions of the rack cabinets conform to the EIA standard EIA-310-D
Cabinets, Racks, Panels, and Associated Equipment (1992). See Figure 11 for rack
cabinet internal dimensions.
Figure 11. Measuring inside of the rack cabinet
All vertical rack cabinet measurements are given in rack units (U), where 1U is equal
to 4.45 cm (1.75 in.). The U levels are marked on labels on the front and rear
mounting flanges inside of the rack cabinet, as shown in Figure 12.
Figure 12. Measuring U levels within rack cabinets
12
IBM NetBAY Rack: Planning Guide
45.0 cm MIN.
(17.7 in. MIN.)
46.5 cm (18.3 in.)
48.34 cm MIN.
(19.0 in. MIN.)
21
20
19
45.0 cm MIN.
(17.7 in. MIN.)
46.5 cm (18.3 in.)
48.34 cm MIN.
(19.0 in. MIN.)
21
20
19