Fits on a flat rack eg 19-22". In addition you should also start by fitting the front which means that the front of the shelf is pushed backwards. They made an odd design decision. Typically, the rack mounts solidly in the front; and have adjustments in the back. They're symmetrical, which means that with deeper racks (e.g. 25 inch or more) the solid part of the shelf is in the middle.
NavePoint 12U Wall Mount Network Server Cabinet Rack Enclosure with Glass Door and Locking Mechanism
10 Review
NavePoint 1U Black Vented Rack Tray Shelves - Universal Design, 8 Inches (210mm Deep), No Lip
11 Review
NavePoint 1U Vented Rack Tray - 14 Inches (350mm Deep), Black, Lipless Design
11 Review
π© Lancher 60-Pack Black Cage Nuts and Screws for Server Rack Mounts - M6 x 16mm - 1U, 2U, 6U, 12U Cabinets and Shelves
11 Review
Renewed Logitech G PRO X Wireless Lightspeed Gaming Headset with Blue VO!CE Mic Filter for Immersive Gaming Experience
122 Review
Enhance Your Visual Experience with Logitech C260 Webcam
78 Review
Logitech HD Webcam C270: Crisp 720p Widescreen Video Calling & Recording (960-000694), Lightweight and Portable at 3.15 lb.
192 Review
Smartphone Samsung Galaxy A50 4/64 GB, 2 SIM, black
82 Review