B-Line SB5873108TG Eaton series open frame racks, Steel, Telco gray powder coat, 12-24 panel mounting holes, 58 mounting spaces, Top channel style, Seismic Zone 4, network bay closed duct rack, ASTM A1011SS

The SB5873108TG is a 108 inch tall open frame rack with 58 mounting spaces of usable rail. At 58 RU it is taller than the common 45U 7-foot relay rack, so confirm your ceiling height and any overhead cable tray clearance before you commit to it.

Yes. The frame is 19 inches wide and the rails are punched with 12-24 panel mounting holes, which is the threaded pattern most telecom patch panels, rack-mount switches and shelves are supplied for. You will need 12-24 rack screws; bring your own if your panels ship without them.

The SB5873108TG is built as a Seismic Zone 4 network bay closed duct rack, which is the most severe of the legacy seismic zone classifications. It is also UL Listed. Zone 4 rating depends on the rack being anchored to the floor per the manufacturer's installation detail, so budget for floor anchors and, where the design calls for it, overhead bracing.

Open frame. There are no side panels, no doors and no locking enclosure on the SB5873108TG, so equipment is accessible from all sides. If you need physical security on the gear or front-to-back airflow containment, an open frame bay is the wrong choice and you want a lockable enclosed cabinet instead.

A closed duct network bay carries vertical cable channels as part of the frame itself, so fiber and copper runs are routed inside an enclosed path rather than cable-tied to open uprights. That matters on central office and main distribution frame work where bend radius protection and separation of runs are specified. It also means you are not buying separate bolt-on vertical managers to get an organized bay.

It weighs 127.19 lb. At that weight and 108 inches tall, this is a two-person lift to stand up and hold plumb while the floor anchors go in. Plan the delivery path and door widths before it arrives.

Top channel construction puts a structural channel across the top of the bay. It ties the uprights together and gives you a surface to land overhead ladder rack or runway on when bays are ganged in a row, which is how these are normally installed in a telecom room rather than as a single standalone frame.

Steel to ASTM A1011SS, finished in Telco gray powder coat. That is the standard structural sheet steel spec for this class of bay and the gray powder coat is the finish telecom rooms are usually standardized on, so it will match existing B-Line bays in the same room.