Tripp-Lite DMCVW4555X4 El Manual Del Propietario página 7

Assembly
5
Install the Universal Plates
Slide the universal plates (F) into the support plates,
making sure to align the holes in the universal plates
with the holes in the support plates.
F
Use the M6x20 screws (P-B) and wrench (A-D) to secure the universal
plates to the support plates. Do not over-tighten the screws.
7
A-D
P-B
P-A
H
Use the ST4.2x9.5 screws
(P-A) to attach the four plastic
covers (H) to each end of the
universal plates.