B-Line Eaton series open racks, Double sided, 340 lb, Steel, Telco gray powder coat, 12-24 panel mounting holes, 45 mounting spaces, Top angle style,

The SB5866084TG open frame rack gives 45 mounting spaces on an 84 inch tall frame, with a rated load capacity of 340 lb. That load number is the limit to plan around: 45 spaces of lightweight patch panels and horizontal managers will stay well under it, but a stack of heavy switches or UPS gear will not. Distribute weight low in the frame and size to the 340 lb rating, not to the space count.

Rails on this Eaton B-Line open rack are drilled with 12-24 panel mounting holes, so equipment mounts with 12-24 screws directly into the rail. No cage nuts or square-hole cage hardware are used. If your gear shipped with 10-32 or M6 screws, you will need 12-24 rack screws instead.

Yes. The SB5866084TG is specified as a Seismic Zone 4 network bay open duct rack, and it is UL Listed. It is built from ASTM A570 grade 33 steel. Seismic performance depends on the rack being anchored per the installation requirements for the zone, so treat the floor anchorage and any top bracing as part of the job.

Plan the footprint from the stated dimensions: 84 in height, 23 in width, and 84 in for the length/depth figure. The frame itself weighs 122.85 lb empty, which matters for both the floor loading calculation and for getting it upright with two people during install.

An open frame rack like this double sided B-Line unit gives you access from both faces and free air movement, which is what you want in a controlled telecom or MDF room where cable volume is high and physical security is handled by the door on the room. Choose an enclosed cabinet instead when the gear sits in shared or public space, needs lockable access, or needs filtered/contained airflow. Open racks also make vertical and horizontal cable management runs far easier to dress on a network bay build.

The finish is Telco gray powder coat over steel, which is the standard telecom equipment room color, so it lines up with existing B-Line telco bays and ladder rack runs in the same finish. The top angle style also matches the usual arrangement for running ladder rack or cable runway across the top of a lineup of bays.

Yes, that is what the top angle style is for. The angle across the top of the bay is the attachment point for overhead cable runway or ladder rack, so multiple bays can be ganged into a lineup with a continuous runway above. Runway, butt splice kits, and mounting hardware for it are separate items from the rack.