B-Line SB5856084TG Eaton series open frame racks, Steel, Telco gray powder coat, 12-24 panel mounting holes, 45 mounting spaces, Top channel style, Seismic Zone 4, network bay open duct rack, Grade 33, ASTM A570

The SB5856084TG is a 45 mounting space open frame rack with 12-24 tapped panel mounting holes on the rails, which is the standard thread for network and telecom panel gear. Overall it measures 84 in high, 23 in wide, and 84 in on the length/depth dimension listed. Equipment supplied with 10-32 screws will need 12-24 hardware instead, since the rails are tapped 12-24.

Yes. The SB5856084TG is built as a Seismic Zone 4 network bay open duct rack, so it is intended for the highest seismic zone classification. It is also UL Listed. Seismic performance depends on anchoring the base to the floor structure per the seismic detail on your drawings, so the anchor spec comes from the engineer of record, not the rack itself.

No. This is an open frame network bay, not a cabinet. There are no doors, sides, or locking panels, so equipment is fully accessible from every side. If the room is not itself secured or you need a lockable footprint for tenant or PCI separation, you need an enclosed cabinet instead of an open rack.

It stands 84 in tall and provides 45 mounting spaces of usable equipment area. Before you commit, check your ceiling and overhead ladder rack or cable tray height, since an 84 in frame plus top channel needs clearance above for cable entry.

Top channel means the frame is tied together with a channel across the top of the uprights. On the SB5856084TG that channel is what gives you a rigid head for ganging bays in a row and a mounting point for overhead cable runway or ladder rack. A plain two-post frame without the top channel is lighter and cheaper but gives you nothing to tie the top of the rack into the overhead pathway, which matters in a seismic installation where the rack is braced top and bottom.

Formed from ASTM A570 Grade 33 steel with a Telco gray powder coat finish. That is the standard telecom gray, so it matches existing Telco gray bays and cable runway in a data or MDF room. The powder coat suits conditioned indoor equipment rooms; it is not a galvanized or outdoor-rated finish.

The rack weighs 78.53 lb bare. That is a two-person lift to stand an 84 in frame upright and hold it while the base is anchored, and you should plan floor loading around that 78.53 lb plus the weight of everything you rack into the 45 spaces.

Order it as Eaton B-Line SB5856084TG. That single number covers the 84 in, Telco gray, top channel, Seismic Zone 4 open duct network bay with 12-24 rails and 45 mounting spaces.