I ordered this power strip not intended for installation in a 19 "cabinet, but for mounting on a base because it has the exact width that I needed. The metal brackets at the ends can also be rotated 180 ° screw again, but they then no longer fit perfectly, because the mounting holes for the screws are not in the middle and not aligned with the output of the connecting cable. Unfortunately, you can angle on the cable side do not lose weight because of the plug does not fit through the hole. New holes drilling would therefore become very cumbersome. With 2 washers but it can be done without new holes.