RMU: 9U
While the quality of the rack is exactly as expected, sadly the final assembled size is not correctly stated. The description says 18.75" but in reality it is 18 31/32nds without the screws but the screws add another 5/16" to the overall height. This means my 19" tall opening in the custom built cabinet is not enough to clear the rack. I am hoping to change the screw to countersink type which will require modification to all the holes and even that needs to total no more than 1/32" in order to fit my cabinet. Specs in descriptions matter and this is a clear miss by Networx...