The “19 inch rack”, you need to know about server racks. Server racks are open metal frames or enclosures that can store multiple electronic devices
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Raising Electronics 15U Rack Wall Mount Network Server Cabinet Rack Enclosure Glass Door Lock 22.75 Depth With Fixed Shelves
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Raising Electronics Open 15U Rack - Solid, Versatile, and Premium Quality Made; Organize and Secure your 15U rack mount equipment.
15U Rack 4 Post Open Frame Server Rack Enclosure 19 Adjustable Depth
19 Inch Rack: Most Up-to-Date Encyclopedia, News & Reviews
Raising Electronics Server Rack 4 Post Open Rack Frame Rack Enclosure 19 inch Adjustable Depth Aluminum (27U,56Inch Height)
18u-47u 19inch Network Cabinet, Floor Standing Cold-Rolled Steel Server Rack Cable Management Data Center - China Network Cabinet, Server Rack
Raising Electronics 27U 4 Post Open Frame Network Server Rack 19inch Width 600mm Deep with 3 Pairs of L Rail
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Raising Electronics Server Rack 4 Post Open Rack Frame Rack Enclosure 19 inch Adjustable Depth Aluminum (42U,82Inch Height)