Overview
Requirements for the standard open racks for mounting the switch.
If you are mounting the chassis in an open rack (no side panels or doors), ensure that the rack meets these requirements:
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The minimum vertical rack space per chassis must be equal to the rack unit (RU) of the chassis. One rack unit is equal to 1.75 inches (4.4 cm).
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The distance between the chassis air vents and any walls should be 2.5 inches (6.4 cm).