B-Line Eaton series open racks, Double sided, Steel, Telco gray powder coat, 12-24 panel mounting holes, 51 mounting spaces, Top angle style, Seismic

Yes. The Eaton B-Line SB5868096TG is built as a Seismic Zone 4 network bay closed duct rack, so it is the version to specify where the local building code puts you in the highest seismic category. Anchoring to the structural floor (and to overhead cable runway or wall bracing per the engineer's detail) is what carries that rating through on the job.

Tapped 12-24 panel mounting holes, which is the telco standard rather than the 10-32 found on some equipment racks. Your equipment screws and cage-free hardware have to be 12-24 or they will cross-thread the rail.

51 mounting spaces, which is 51 usable rack units of gear on a 96 inch tall frame. That is more than a typical 45U enclosure, because an open frame gives up cabinet top and bottom structure to usable height. Plan your patch panels and switches against 51U, not 45U.

The finish is Telco gray powder coat over steel, the standard color used across B-Line network bay product, so it lines up with existing telco gray bays and cable runway in the same room. If your installed racks are black or white, this one will not match.

Yes, the rack is UL Listed, which is the line item most school, hospital, and government specs ask for on network bay hardware. Combined with the Seismic Zone 4 duty, it covers the two things a facility submittal usually flags.

An open frame bay like the SB5868096TG gives you 51 mounting spaces and access from both sides with no doors to swing, which is what you want in a secured telecom room where airflow and cable dressing matter more than physical security. Choose an enclosed cabinet instead when the equipment sits in a shared or public space and needs lockable doors, or when you are dealing with dust.

Double sided refers to the closed duct configuration having mounting and cable management access from both faces of the bay, rather than a single-face frame. It suits a rack placed in the open in a room where techs work from both front and rear, instead of being pushed against a wall.

Top angle refers to the angle member across the top of the frame, which is what you land overhead cable runway or ladder rack on and what ties the bay into the overhead bracing on a seismic installation. It is a structural detail, not a cover.