B-Line Eaton series open racks, Steel, Telco gray powder coat, 12-24 panel mounting holes, Top angle style, Seismic Zone 4, network bay open duct rac

The rails on the SB5841138TG come pre-tapped with 12-24 panel mounting holes, so standard 12-24 rack screws thread straight in. No cage nuts or clip nuts to add. If your gear ships with M6 or 10-32 hardware, source 12-24 screws for it instead.

It is built as a Seismic Zone 4 network bay open duct rack, which is the highest of the legacy seismic zone designations and what most California jurisdictions call for. The frame is also UL Listed. Zone 4 rating depends on the rack being anchored to the floor per the manufacturer's anchorage detail, so the attachment to your slab is part of the rating, not an optional step.

The frame is 19 inches wide and the bare rack weighs 107.88 lb. Add your equipment load on top of that when you size floor anchors or check a raised floor's point loading. Because it is an open two-post style frame rather than an enclosure, the anchored footprint is narrow, which is exactly why the floor attachment matters on a bay this tall.

An open frame duct rack gives you access from all four sides and free airflow, and it is what telco and network bays are normally built from when the room itself is secured. Go with an enclosure instead when you need locked access, dust control, or ducted airflow containment. The SB5841138TG is the open style, with a top angle for mounting overhead cable runway.

The top angle is the horizontal member across the top of the frame, and it is the tie point for overhead cable runway, ladder rack, and bracing between bays. If you are ganging several racks in a row, the top angles line up so the runway can be bolted across the whole lineup rather than to each rack individually.

The model and manufacturer part number is SB5841138TG, an Eaton B-Line series open frame rack, 138 inches tall, 19 inches wide, 75 mounting spaces, 12-24 tapped rails, top angle, Telco gray. Matching those five attributes is what keeps a new rack flush and hole-aligned with an existing lineup.

Formed from ASTM A570 grade 33 steel with a Telco gray powder coat finish. Powder coat over structural steel handles dry indoor MRO environments, telco closets, and equipment rooms. Telco gray is the standard shade in that world, so it matches existing bays in most central offices and data closets.