B-Line SB5568140TG Eaton series open frame racks, Steel, Telco gray powder coat, 12-24 panel mounting holes, 38 mounting spaces, Top angle style, Seismic Zone 4, closed duct unequal flange rack, ASTM A570

The SB5568140TG open frame rack is punched and tapped for 12-24 panel mounting screws, so equipment mounts directly with 12-24 hardware, no cage nuts. If your gear ships with 10-32 screws or expects square-hole cage nut rails, this rack is not the match.

Yes, it is built as a Seismic Zone 4 closed duct unequal flange rack, which is the configuration specified for the highest seismic zone telecom and data rooms. It is also UL Listed. Bear in mind the rack itself is only part of the equation, the anchoring to the floor slab and any overhead bracing still have to meet whatever the structural engineer calls out on the drawing.

The SB5568140TG gives you 38 mounting spaces of usable rail, so it takes 38 single-space panels or any mix that adds up to that, for example nine 4-space switches and a couple of patch panels. Count the spaces of every panel, switch, and shelf you plan to install and keep the total at or under 38.

Unequal flange means the two legs of the rack's channel are different widths, giving a deeper face on one side for cable routing and a closed duct section for running cable vertically inside the upright rather than strapped to the outside. It is the standard central office and telco style where cable volume is heavy and you want the runs protected inside the frame. An equal flange rack is the simpler symmetrical section, fine for lighter equipment loads and smaller cable counts. The SB5568140TG is the closed duct unequal flange version.

It is fabricated from ASTM A570 grade 33 steel with a powder coat finish, which is the material callout you can put on a submittal or cite against a spec sheet that requires structural quality hot-rolled sheet and strip. The rack is UL Listed as well.

There is one configuration to order, model SB5568140TG, in Telco gray powder coat. No finish, height, or hole pattern choices to call out. Mounting hardware, vertical cable management, and floor anchors are separate items you will need to specify alongside it to finish the install.

The SB5568140TG is finished in Telco gray powder coat, the standard gray used across Eaton B-Line open frame telecom racks, so it lines up with existing B-Line frames in a central office or MDF. If your room is standardized on black racks, this one will read noticeably lighter beside them.

Top angle refers to the angle section across the top of the SB5568140TG, which stiffens the frame and gives you a surface to land overhead cable runway or ladder rack and to tie back to overhead bracing. In a Seismic Zone 4 room that top connection is normally part of how the rack is braced, so keep it accessible when you lay out the tray above the row.