Middle Atlantic Products' accessory VRR-54 Additional Z-Rail Kit for VMRK-54 (54RU; 10/32 Thread) installs in the rear of your rack and can support an efficient cable management scheme.
Using Z-Rails, you can install rack accessories that require both front and rear rails. For example, side-mounting Horizontal Lacer Bars take the strain off cables and keep them tidy for easy identification.
These steel rails are 54 rack spaces high and match the black powder coat finish of your VMRK-54 rack.
Add Z-Rails for Cable Management
Use Z-Rails to support side-mounting lacing bars like the LBP-1.5, which help organize your cables.
Use Z-Rails to support heavy gear that must be mounted using both front and rear rails. Also use them to mount equipment and panels in the back of your rack.