To start and not distort the evaluation, I removed one star for the price a little expensive, although the shelf unit is an excellent bill, comes with a bag of 4 cage nuts and screws. And not to have anticipated a few small holes that would have set the top or devices with serflex rather than double-sided. Anyway, for musicians and technicians looking to expand their rack by adding the shelf, do not worry. In the direction of racking face, she has a stop behind with open front and back if you rackez the shelf by fixing the back of the rack cabinet. I plan to replace a patch bay 1U rack by this (see photo), to secure it with a small double-sided remote noon, and an effect control pedal to trigger the tap delay. This is perfect fixing with the top reached, because this shelf is obviously not on rail. It can be set deeper devices the indicated size by adding shims, so as not to abut on the rear lip, thus in the configuration I describe, with a few wedges, one can set a notebook, for practical order some rack elements with ad hoc interface.
