B-Line Eaton series open racks, Steel, Yellow zinc, 12-24 panel mounting holes, 45 mounting spaces, Top angle style, Seiemic zone 4, network bay open

12-24. The mounting rails on this B-Line open duct rack are punched with 12-24 panel mounting holes, so order 12-24 screws and cage-free hardware. 10-32 screws will not thread and forcing them ruins the rail.

The SB5763138YZ is built as a seismic zone 4 network bay open duct rack, and it is UL Listed. The frame is 6 gauge steel to ASTM A1011SS. Seismic anchorage still has to be executed per your structural drawings, but the rack itself is the zone 4 version of the B-Line open frame line.

130 lb bare. At 130 pounds and 138 inches tall, it is a two-person set minimum, and realistically a three-person lift to walk it upright and hold it while the floor anchors go in. Plan rigging accordingly for a zone 4 install where the base must be bolted before any gear loads on.

An open frame rack like this B-Line network bay gives you all-round access to patch cords and passive cooling, and it is the usual choice for switch and patch panel stacks in a secured room. Go to an enclosed cabinet instead when you need physical security on the gear, dust control, or door-mounted airflow. This one is the open duct rack version, so there are no side panels or doors on it.

The top angle style means the rack is built with an angle member across the top of the frame, which is what you bolt overhead cable runway or ladder rack to and what ties the bay into adjacent racks and the overhead support grid. On a seismic zone 4 bay that top bracing is part of how the frame is stabilised, so budget for the runway and connecting hardware as separate items.

45 mounting spaces, so 45U of usable equipment height on a 19 inch frame. That is above the common 42U cabinet, which matters if you are stacking a full patch field plus switches in one bay rather than splitting across two.

The frame is steel with a yellow zinc surface finish, a plated corrosion coating rather than paint. It is suited to conditioned indoor telecom and electrical rooms. It is not a hot dip galvanized or exterior finish, so keep it out of wet or outdoor locations.