B-Line Eaton series open racks, Steel, Yellow zinc finish, 12-24 panel mounting holes, 48 mounting spaces, Top channel style, Seiemic zone 4, network

The SB5767138YZ provides 48 mounting spaces on its rails, so you get 48U of usable panel space in a single bay. Tapped 12-24 panel mounting holes run the full height, which is the thread most network switch and patch panel hardware ships with.

Yes. The SB5767138YZ is a seismic zone 4 network bay open duct rack, so it is the version to specify where the structural drawings call for zone 4 anchorage. It is also UL Listed. Anchors and any overhead bracing are separate items you supply per the engineer's detail.

The rails carry tapped 12-24 panel mounting holes, so 12-24 rack screws thread directly into the rail. No cage nuts or clip nuts are needed, unlike a square-hole EIA rail. If your patch panels and switch ears came with M6 or 10-32 hardware, swap to 12-24 screws for this rack.

Plan for a footprint 23 inches wide, and the rack itself weighs 136 lb empty before any equipment, cable, or duct is loaded on it. Add your own aisle clearance front and rear for service access and for the code-required working space in front of powered equipment.

It is a top channel design, which gives you a channel across the top of the bay to land ladder rack, runway, or duct and route cable in from overhead. That is why it is called a network bay open duct rack: it is built to be ganged and tied into an overhead pathway rather than used as a standalone island frame.

Construction is ASTM A570 grade 33 steel with a yellow zinc finish. Yellow zinc gives light corrosion protection suited to conditioned indoor telecom and equipment rooms. For a wash-down, exterior, or corrosive process area, that finish is not the right call and you want a coated or stainless frame instead.

An open frame bay like the SB5767138YZ gives two-post access from all sides, the easiest cable dressing, and free air movement, which is why it is the standard choice in a secured telecom or IDF room where the room itself provides the security. If the gear sits in a shared or public space, or you need locking doors, side panels, or filtered airflow, buy an enclosed cabinet instead. This rack has no doors or panels.

One configuration only: model SB5767138YZ, yellow zinc, 138 inch height, 48 mounting spaces, 12-24 tapped rails. There is no finish or height selection to make, so the part number is all you need on the purchase order.