B-Line SB5771084TG Eaton series open frame racks, Steel, Telco gray powder coat, 12-24 panel mounting holes, 51 mounting spaces, Top angle style, Seismic Zone 4, network bay open duct rack, ASTM A570

51 mounting spaces over an 84 inch tall frame. Plan your equipment stack against 51 usable spaces, and allow ceiling clearance above the 84 inches for overhead cable runway or ladder rack.

The SB5771084TG is built as a Seismic Zone 4 network bay open duct rack, made from ASTM A570 grade 33 steel, and it is UL Listed. It is the version to specify for hospital, data center, or telco rooms in high seismic areas rather than a general-purpose open frame.

An open frame rack like the SB5771084TG gives two-sided access and free airflow for patch panels, switches, and heavy cable termination, and its top angle style accepts overhead cable runway. Choose an enclosed cabinet instead when you need locked security, dust control, or fan-forced cooling for servers. The open duct design here is aimed at cable-dense telco and network bays, not secured server storage.

The frame is 19 inches wide, 84 inches high, with a stated length/depth of 84 inches, and it weighs 118 lb bare. Add your equipment and cable weight on top of that when checking floor loading, and expect to handle it as an oversize steel frame on delivery.

The SB5771084TG is the frame only. A seismic installation needs anchors into the slab and, in most rooms, overhead cable runway tied to the top angle, plus 12-24 rack screws for each piece of gear since the rails are tapped 12-24. Vertical cable managers and any grounding kit are separate items as well.

It ships in Telco gray powder coat over steel, the standard gray used across telco and network bays, so it lines up visually with existing B-Line gray racks and runway. Powder coat over ASTM A570 grade 33 steel holds up to repeated equipment swaps in a conditioned room.