I fitted this in my Thomann rack.
It's a bit of a pain to fit, if I'm honest. It secures both front and back (make sure your rack has rear rails) which means you need to loosen off the brackets, get the unit half-fitted, partially tighten the brackets so you can get it out again, fully tighten the brackets, then refit it.
Having said that, once fitted it feels sturdy enough. The drawer doesn't lock in place like other, more expensive, units. However, there is sufficient friction in the operation that I don't think you will find the drawer sliding back and forwards whilst in transit.
In summary, a decent quality drawer at a decent price.