B-Line SB5872138TG Eaton series open frame racks, Steel, Telco gray powder coat, 12-24 panel mounting holes, 48 mounting spaces, Top channel style, Seismic Zone 4, network bay open duct rack, ASTM A1011SS

Yes. The SB5872138TG is built as a Seismic Zone 4 network bay open duct rack, so it is the version to specify where the drawing calls for Zone 4 anchorage rather than a standard non-seismic bay. It is also UL Listed. Anchoring hardware and the floor attachment detail are separate from the rack itself, so plan the base and any overhead bracing per your engineer's detail.

The rack gives 48 mounting spaces, which is 48 rack units of panel space on the rails. That is more than a typical 45U data center cabinet, so measure ceiling height and cable tray clearance before committing: overall height is 138 inches.

The rails are tapped with 12-24 panel mounting holes, so equipment and panels bolt directly with 12-24 screws. No cage nuts or square-hole clip nuts are needed, unlike a universal square-hole rack. If your switches and patch panels shipped with M6 or 10-32 hardware, order 12-24 screws to match.

Yes, the SB5872138TG is a 19 inch wide rack, which is the standard EIA equipment width, so ordinary 19 inch patch panels, switches, and shelves land on the rails.

It is a top channel design and a network bay open duct rack, meaning the frame carries an integrated duct routing path and the head of the rack is set up to tie into overhead cable runway rather than relying on side panels. Open frame construction also leaves both sides fully accessible for lacing and vertical dressing, which is why telecom rooms use this instead of an enclosed cabinet.

Order by Eaton B-Line model SB5872138TG. The Seismic Zone 4 rating, 48 mounting spaces, 12-24 tapped rails, and telco gray finish all belong to that specific part number; adjacent B-Line bays in the same series change height, hole pattern, or seismic rating, so a substituted number may not carry the Zone 4 qualification your submittal needs.

Steel built to ASTM A1011SS, finished in telco gray powder coat. That gray is the standard finish across telecom bays and runway, so it lines up visually with existing gray racks and ladder rack in a carrier or MDF room.

The rack weighs 127.19 lb on its own. At that weight and 138 inches tall, it is a two-person lift to stand up and anchor, and the shipping length means it will not go up a standard passenger elevator lying flat in most buildings. Plan the route into the room before delivery.