B-Line SB5777084YZ Eaton series open frame racks, Steel, Yellow zinc, 12-24 panel mounting holes, 66 mounting spaces, Top channel style, Seismic Zone 4, network bay open duct rack, 11 gauge, ASTM A1011SS

Yes. The SB5777084YZ open frame rack 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 seismic bracing. The frame is 11 gauge steel to ASTM A1011SS. Anchoring to the slab and any overhead bracing still has to follow the engineer's detail for the room.

The frame gives 66 mounting spaces over an 84 inch height, so you have considerably more usable panel space than a standard 45U 84 inch cabinet frame. A 42U worth of equipment fits with spaces left over for cable management or patch panels above and below.

The rails are tapped with 12-24 panel mounting holes, so equipment mounts with 12-24 screws directly into the rail. No cage nuts or square-hole clips are needed, which is the difference between this and a square-punched rail. Bring 12-24 hardware for every device you hang.

Plan on a footprint of 23 inches wide by 84 inches deep, standing 84 inches tall. The 84 inch depth is what distinguishes this network bay from a shallow two-post relay rack, so verify the aisle layout before it goes on the floor plan. The rack itself weighs 118 lb before any equipment load.

An open duct rack like the SB5777084YZ leaves all four sides accessible and lets cable enter from any direction, which is why it is the normal choice for patch panel and switch bays in a telecom room where the space itself is secured. Choose an enclosed cabinet instead when you need locked access, dust control, or containment for hot aisle airflow. This frame offers none of those.

Yes, the SB5777084YZ carries a UL Listed marking, which covers the submittal requirement on jobs where all rack and frame product has to be listed. That is the only rating carried on the frame besides its Seismic Zone 4 construction.

The top channel construction puts a structural channel across the top of the frame, which is what ladder rack and runway sections tie into when cable is brought in overhead. If you are building a row of bays, that channel is the tie point between racks and the overhead pathway, so order your runway and joining hardware to match.

Yellow zinc over steel is a plated corrosion finish, appropriate for indoor telecom and electrical rooms including unconditioned ones. It is not a coating intended for outdoor or washdown exposure. For a painted-black aesthetic in a visible space, specify a powder coated frame instead.