B-Line SB5868138UTG Eaton series open frame racks, Double sided, Steel, Telco gray powder coat, 75 mounting spaces, Top angle style, Seismic Zone 4, network bay closed duct rack, 14 gauge, ASTM 569

The SB5868138UTG gives you 75 mounting spaces, which is why the frame stands 138 inches tall. That is well above a standard 45U or 51U cabinet, so check your ceiling height, overhead cable tray, and sprinkler clearance before you commit. It is a double sided bay, so equipment mounts from both faces.

Yes. The SB5868138UTG is built as a Seismic Zone 4 network bay closed duct rack, and it is UL Listed. Seismic rating depends on the anchorage as installed, so the floor anchors and any overhead bracing still have to be engineered for your structure.

Width is 23 inches and the listed length/depth figure is 138 inches, with an overall height of 138 inches. Use the 23 inch dimension for bay-to-bay spacing when you gang multiple frames in a row, and lay out your hot and cold aisle clearances around that.

14 gauge steel to ASTM 569, finished in Telco gray powder coat. That is the standard telco material call-out, so it will match existing Eaton B-Line bays in a central office or MDF room both structurally and in color.

An open frame double sided bay like the SB5868138UTG is the right call for telco and cross-connect work where you need constant access to both faces, high cable density, and free air movement. Go to an enclosed cabinet instead when you need physical security, locked doors, or dust and airflow containment. With 75 mounting spaces on a 23 inch wide footprint, this one is built for maximum density in a controlled equipment room, not an open office.

Top angle refers to the angle member across the top of the bay. It gives you the attachment point for overhead cable runway or auxiliary framing channel above the rack, which is how telco and data rooms tie a row of open frame bays into a continuous ladder rack system.