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
1U Servers - PowerEdge One-Socket Rack Servers
What is a server rack and do you still need one?
Server Racks by Brand
Standards of 19-Inch Rack: depth, width ⚡️ — SysRacks Explained
Blanking Panels for 19 Inch Server Racks 1RU - 6RU
DIY Server Rack Plans
RAISING ELECTRONICS Open Rack 15U 4 Post Open Frame 19-Inch Data Network Desktop Server/Audio Rack : Electronics
18u-47u 19inch Network Cabinet, Floor Standing Cold-Rolled Steel Server Rack Cable Management Data Center - China Network Cabinet, Server Rack
How to Power Server Cabinet PDUs from a UPS System
What are 1U, 2U, and 4U in Servers?
Sizing Racks For Your Server Room Design
Raising Electronics Server Rack Open Frame Rack 4 Post 19 inch Adjustable Server/Audio Rack Cold Rolled Steel(15U,17 Depth) : Electronics
Got my ups rack loaded! : r/homelab
How to convert an old Laptop to a Rack-Mountable Computer, by Paolo Campitelli
42U Server Rack Cabinet, Locking Front/Rear Doors, Excellent Airflow