Span completion with backs
To make a correct and easy assembly of a back wall, it is advisable to mount at least the first shelf at the bottom, thread the first back, matching and sliding the special semi-circular slots in the ribs of the uprights, which act as a sliding track. Proceed to the top of the span, alternately inserting a shelf and a back. The standard height of a back is 500 mm, but for spans of heights out of standard, you can request compensation backs for specific cases.