König & Meyer 49070 19" Shelf

This is an expensive shelf, but you get what you pay for. It is a very well made, sturdy, heavy shelf unit with a lock which prevents the shelf rolling out. The lock can also be locked using a supplied key (2 keys are provided). It is secured with rack screws front and back. dv247 provide a good service and good UK prices. The UK advertised price was what I paid, no extra European import taxes.