Toolless Coupler Base Helps You Create Custom Cable Management Schemes The SmartRack® SRWBTLCPLRBS is a black powder-coated metal coupler for easy installation with your wire mesh cable tray. It connects two straight sections of cable tray to extend your cable management application along the wall, floor or ceiling of your data center, network closet or industrial space. The coupler snaps easily into the wire mesh with no mounting hardware required. Multiple SRWBTLCPLRBS couplers may be needed for wide cable trays. Use with Tripp Lite's SRWBUNVCPLR Coupler Kit (sold separately) to ensure the best connection.