B-Line SB5779140TG Eaton series open frame racks, Steel, Telco gray powder coat, 12-24 panel mounting holes, 75 mounting spaces, Top channel style, Seismic Zone 4, network bay closed duct rack

Yes. The Eaton B-Line SB5779140TG is built as a Seismic Zone 4 network bay closed duct rack, which is the rating specified for the highest seismic design category jobs in central office and data center work. It is also UL Listed. If your drawing calls out Zone 4 anchorage for the rack line-up, this frame is the right family.

The frame gives you 75 mounting spaces on 12-24 tapped panel mounting holes, over a 140 inch overall height. That is a full-height telco bay rather than a standard 7-foot 45U rack, so confirm your ceiling and overhead cable rack clearance before you order.

Plan on 23 inches of width and a 140 inch height for the frame. The rack is listed with a 140 in product length/depth figure as well, so verify aisle and overhead routing against those numbers when you lay out the bay line-up. At 137 lb it is a two-person set and needs floor anchorage appropriate to the seismic rating.

The uprights come with 12-24 tapped panel mounting holes, so equipment and panels bolt straight to the rails with 12-24 rack screws. No cage nuts or square-hole hardware are used on this style. Screws and any cable management, ladder rack, or grounding kit are separate items from the rack itself.

The SB5779140TG is a top channel frame, meaning the uprights are tied together by a channel across the top. That channel is what you land overhead cable rack, ladder tray, and bay-to-bay bracing on, and it stiffens the frame for the Seismic Zone 4 duty. If your design has no overhead support structure to tie into, a top channel bay is still fine, but it is most often specified where overhead routing exists.

It is an open frame rack, not an enclosure. There are no side panels, doors, or locking access, so equipment is open on all sides for airflow and cabling. If you need physical security or containment for your gear, an open frame like this one is the wrong choice and you want a lockable cabinet instead.

Order Eaton B-Line part number SB5779140TG. That number covers the steel, Telco gray, top channel, 12-24 hole, 75-space Seismic Zone 4 closed duct network bay. There is one configuration under that number, so there is no finish or height option to specify.

The finish is Telco gray powder coat over steel, which is the standard color used across Eaton B-Line open frame telco racks, so a new bay drops into an existing gray line-up without looking out of place. Powder coat over steel also holds up to handling during equipment turns better than a painted finish.

No. The bay weighs 137 lb and stands 140 inches tall, so it takes at least two people plus mechanical help to stand it up and hold it while the floor anchors are set. Anchor it before loading any equipment.