What can I say? its a simple piece of kit to install your Yamaha hardware into a rack.
My EMX 5000 - 12 was beaten to near death by constant transport in the back of my van with nothing but an old blanket to save it for around 8 years!! I stumble upon Thomann, then this pair of little beauties, and now my mixer is sitting pretty inside a solid case, with amps and players mounted underneath.
Extremely simple to install if you can use a screwdriver. The mounts are built from a solid metal and well powder coated so there's no bending and they make the desk look good in the rack too.