B-Line SB5766140YZ Eaton series open frame racks, Steel, Yellow zinc, 12-24 panel mounting holes, 48 mounting spaces, Top angle style, Seiemic zone 4, network bay open duct rack

The SB5766140YZ gives you 48 mounting spaces, so you can populate 48U of switches, patch panels and servers on a single bay. The frame stands 140 inches tall and is 23 inches wide, which is why it carries more usable space than a standard 7-foot two-post rack. Check your ceiling height and any overhead cable tray or sprinkler clearance before committing to a 140 inch frame.

The rails are tapped 12-24 panel mounting holes, so equipment bolts straight in with 12-24 screws. No cage nuts and no square-hole clips are involved. If your patch panels and switch brackets came with 10-32 or M6 hardware, order 12-24 screws to suit, since the thread is not interchangeable.

Yes. The SB5766140YZ is built as a seismic zone 4 network bay open duct rack, so it is intended for installations in the highest seismic design category. It still has to be anchored to the floor, and in many jurisdictions overhead bracing, per the engineer's detail for the room.

It is UL Listed, which is usually what an institutional or government spec calls for on equipment racks and what the inspector wants to see on the submittal. The frame is steel with a yellow zinc finish.

Top angle style means the bay is finished with an angle across the top of the frame, giving you a structural point to land ladder rack or runway and to tie into overhead bracing. Plan the tray elevation around the 140 inch frame height so the runway clears the top of the rack.

The rack weighs 137 lb empty. That is a two-person lift at minimum for a 140 inch frame, and most crews walk it in flat and tip it up into position before anchoring. Add your equipment load when sizing the floor anchors.

Open frame. There are no side panels, no doors and no locking enclosure, so cabling and airflow are unobstructed and every side of the equipment stays reachable. If you need physical security or containment in a shared space, you want an enclosed cabinet rather than this bay.

Yellow zinc plating over the steel frame is a bare-metal corrosion finish rather than a cosmetic paint. It also keeps the frame conductive across its bolted joints, which matters when you are bonding the rack into the telecom grounding system. If the room is a finished customer-facing space, a painted rack is the usual choice instead.