Review on 🔧 RAISING ELECTRONICS 4U Wall Mount Open Frame Server Equipment Rack | Adjustable Depth | 19inch Threaded | Black (12-18inch Depth) by Bridgette Andrada

Safe once you hang it on the wall. The only easy part of the installation is the back panel installation. The packaging was very pretty. Good scratch protection. Unfortunately no hardware was sent to mount the sides to the back wall as well as the front sliders. I had to drill holes to fit the screws I already had. Assembly instructions were not sent. Just as I thought it would go wrong and I had to completely disassemble and reassemble. Given the space I had to work with, it was painful. In general. not the most intuitive design. But good packaging and solid when it's up. Mine is fully deployed so I can't speak to full extensions support.