B-Line Eaton series open racks, 340 lb, Steel, Telco gray powder coat, 12-24 panel mounting holes, 48 mounting spaces, Top angle style, Seismic Zone

Yes. The Eaton B-Line SB5861090TG is a 19 inch wide open frame rack, so standard 19 inch panels, patch panels and switches mount directly to the rails. The rails are drilled with 12-24 tapped panel mounting holes, so equipment mounts with 12-24 rack screws rather than cage nuts.

48 mounting spaces on a 90 inch tall frame. That is usable rack units for patch panels, switches and rack-mount UPS gear, and the 90 inch height is why you get the full 48 spaces instead of the 45 typical of a 7 foot frame.

The SB5861090TG is built as a Seismic Zone 4 network bay open duct rack, which is the highest seismic zone classification and what specifiers call for in California and other high-activity regions. It is also UL Listed. Anchoring to the structural floor per the project drawings is still required for the seismic rating to mean anything in the field.

340 lb of equipment load. That is enough for patch panels, fiber enclosures and network switches across the 48 mounting spaces, but it is a light-duty figure by data center standards, so a rack full of servers or a large rack-mount UPS will exceed it. For heavy server loads, look to a heavier-rated frame or a four-post cabinet.

An open duct rack like the SB5861090TG suits a secured telecom or IDF room where you need all-round access to patch cords and cable management, and you are not relying on the rack for physical security or dust control. If the room is shared, unsecured, or the gear needs locking doors and containment airflow, a four-post enclosed cabinet is the right call instead. Open frames also make vertical and horizontal duct cable management far easier to dress, which is what the network bay open duct design is for.

The top angle style means the frame is finished at the top with an angle member, which is the standard mounting point for overhead ladder rack, runway, or cable tray tie-in and for bonding the rack to the telecom grounding busbar. If you are running overhead runway down a row of bays, this is the style you want.

The frame weighs 118.75 lb empty. That is a two-person lift to stand it up and walk it into position, and it should be floor-anchored before any equipment goes in, since a 90 inch open frame is top-heavy once loaded toward the 340 lb capacity.

No cage nuts. The mounting rails come with 12-24 tapped panel mounting holes, so you fasten equipment straight to the rail with 12-24 rack screws. Order the screws separately, they are not part of the frame, and note that gear supplied with 10-32 hardware will not thread into a 12-24 hole.

The frame is steel with a Telco gray powder coat, the standard grey used across telecom bays and relay racks, so it lines up visually with existing Telco gray frames in the same room. Powder coat over steel also holds up to being scuffed by equipment being racked and unracked.