High-Strength Base Bracket Helps You Create Custom Cable Management Schemes The SmartRack® SRWBUNVBASE is a black powder-coated metal bracket for easy installation with your wire mesh cable tray. This standoff base bracket allows you to mount straight sections of cable tray to the floor of your data center, network closet or industrial space and extend your cable management application. Four inches in height, the bracket mounts to the floor with user-supplied hardware and then easily snaps into the wire mesh.