_MB21B Tech Specs

MB21B - 21-Blade Chassis (#F-MB21B-R)
Dimensions (H x W x D)	19-inch rack mountable, 4RU 177.29 mm H x †441.35 mm W x 462.55 mm D (6.980 inches H x 17.376 inches W x 18.211 inches D) 186.76 mm / 7.353 inches H with rubber feet installed †482.60 mm / 19.000 inches W including mounting flanges
Weight	Empty 21-slot chassis: 17.24 kg. (38 lbs.) Each blade: 230 g. (0.5 lbs.)
Power (internal power supply)	Quad redundant power supplies: 90-132V and 180-240VAC 47Hz-63Hz 400 watt maximum per PSU
Temperature	Operating: 0°C to 40°C (32°F to 104°F) Non-operating: -40°C to 70°C (-40°F to 158°F)
Relative Humidity	Up to 95% without condensation
Heat	560 Watts or 1910 BTU/hr *assumes chassis full of Makito X or other Haivision blades
Sound Emission	Room temperature: 56.4 dB(A) L’p(AVG) 50°C Ambient: 63.3 dB(A) L’p(AVG)