B-Line SB5854138TG Eaton series open frame racks, Steel, Telco gray powder coat, 12-24 panel mounting holes, 41 mounting spaces, Top channel style, Seismic Zone 4, network bay closed duct rack

Yes. The SB5854138TG is built as a Seismic Zone 4 network bay closed duct rack, so it is the version to specify where the structural drawings call for Zone 4 anchorage. It is also UL Listed. Seismic performance depends on it being anchored per the installation requirements at both the floor and the overhead channel.

41 mounting spaces, which is 41 rack units of usable panel space. That is a tall bay, and the frame stands 138 inches, so confirm your ceiling height and any overhead cable runway clearance before you set it.

The rails are punched with 12-24 panel mounting holes, so equipment mounts with 12-24 rack screws and cage nuts are not used. If your switches and patch panels shipped with square-hole cage nut hardware, order 12-24 screws separately.

The frame is 19 inches wide and 138 inches on the height and length/depth dimensions given, with a shipping weight of 103.33 lb. Use the width figure when laying out row spacing, and plan on more than one person to stand a bay this tall.

Finish is Telco gray powder coat over steel, the standard telco bay color, so it lines up visually with existing Eaton B-Line telco-gray frames. It is a top channel style bay, meaning it is intended to tie into overhead channel or runway across the row rather than stand alone.

Open frame, not a cabinet. There are no side panels, doors, or locks, so equipment is accessible from all sides and airflow is unrestricted. If you need physical security or dust control in a shared space, an enclosed cabinet is the right choice instead. The closed duct design refers to the vertical cable duct integrated into the bay for cable management, not to an enclosure.