The rackmount kit has two shelf rail assemblies, one for each side of the rack. Each shelf rail is marked LEFT or RIGHT.
The shelf rails are mounted to the rack with four brackets, two on each side. Brackets for square-hole racks are preattached to the shelf rails. The rackmount kit also includes a set of brackets for use with threaded-hole racks.
The shelf rails adjust to fit rack depths from 25 to 34.25 in. (63.5 to 87 cm).
In addition, the rackmount kit includes the shipping brace components. Installing the shipping brace components is optional.