Dell PowerEdge R620 Getting Started Manual page 9

Environmental
Operating
Storage
Airborne contaminant level
Class
–15.2 m to 3048 m (–50 to 10,000 ft).
NOTE: For altitudes above 2950 ft, the maximum
operating temperature is derated 1 ºF/550 ft.
–15.2 m to 10,668 m (–50 ft to 35,000 ft).
G1 as defined by ISA-S71.04-1985.
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