StarTech.com Wall Mount Patch Panel Rack - 4U Wall Mount Rack Shelf with Built in Shelf - 2 Post Open Frame Rack - Rack Shelf (WALLMOUNT8) - cabinet - 8U

Mount equipment that is up to 12 inches deep, such as patch panels or network switches, to your wall. This wall-mount bracket provides 8U of space for mounting shallow rack-mount equipment that's 12 in. deep or less to the wall, such as patch panels or network switches.
The 8U rack optimizes your working space by efficiently mounting your shallow equipment on your wall instead of taking up desk space or other usable surface areas. It's the perfect solution for your space-limited SoHo (small office, home office) environment or server room because it doesn't take up any floor space.
The wall rack is constructed of solid steel to ensure a sturdy and safe mounting solution for your mission-critical equipment. Also, because the wall rack's mounting holes are positioned 16 in. apart, it exactly matches standard drywall construction framework to ensure simple and secure wall-stud anchoring.
The rack also features a rear access panel that can be used to easily run cabling into the rack.
Cage nuts and screws are included with the wall-mount bracket, to save you the hassle of sourcing separate mounting hardware.
If you're looking for a shallow mounting solution with fewer or more rack units, StarTech.com also offers a 6U wall-mount bracket, and a 12U wall-mount bracket.