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2 Description
The HP 19-inch Electronics Industries Association (EIA) racks, options, and accessories are
designed specifically to meet the needs of HP computer and instrumentation customers and
make installing devices in rack mounting systems simple.
Standard Racks
Your standard HP rack is a welded steel frame with removable top, rear doors, casters, leveling
feet and an anti-tip mechanism as shown in Figure 2-1. The top piece is 16-gauge, cold rolled
steel. The base piece is 11-gauge, hot rolled steel. Threaded grounding studs are provided near
the base of every column, and at the top rear.
Racks heights are measured in meters, inches, EIA units, and “U.” 1 EIA unit equals 1 U, which
equals 44.45 mm (1.75 in).
Internally, rails that hold your equipment lock into slots in the vertical mounting columns and
are fastened to the columns with screws. Columns are numbered for easy placement. The
extendable anti-tip mechanism is bi-directional. An extendible top adds 8U of height. Tie-
together kits allow easy, secure mating of cabinets. Tops and doors are perforated for maximized
cooling. Tied together racks with the accessories are shown in Figure 2-2.
Anti-tip mechanism
Top cap
Front
Figure 2-1. Two Basic Racks (excluding Rear Door) Tied Together
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