B-Line Eaton series open racks, Steel, Telco gray powder coat finish, 12-24 panel mounting holes, 67 mounting spaces, Top channel style, Seismic Zone

The SB5778090TG is drilled with 12-24 panel mounting holes, so standard 12-24 rack screws thread directly into the rails. No cage nuts or clip nuts are involved. If your switches, patch panels, or UPS gear ship with 10-32 or M6 hardware, you will need to swap to 12-24 screws.

Yes. The SB5778090TG is built as a Seismic Zone 4 network bay closed duct rack, and it is UL Listed. It is fabricated from ASTM A570 grade 33 steel. Anchoring to the slab and any overhead bracing still has to follow your structural engineer's detail for the site.

Each frame measures 23 inches wide, 90 inches deep on the length/depth dimension, and 90 inches tall. Plan your aisle clearance and anchor pattern off those numbers, and allow for the top channel, which sits above the frame for cable runway or ladder rack attachment.

The frame weighs 121 lb, so it is a two-person set and stand, and it should be anchored to the floor before any gear is loaded into it. Racks this tall get top-heavy fast once patch panels and switches go in.

An open frame such as the SB5778090TG gives you access from all four sides and unrestricted airflow, which is what you want in a controlled telecom room for patch panels and switches. It offers no physical security and no dust protection, so if the equipment sits in a shared space, a mixed-use area, or anywhere the public can reach it, a locking enclosure is the better call. This one is specified as a network bay closed duct rack with a top channel for cable management.

The finish is Telco gray powder coat over steel, the standard color used across central office and network bay frames, so it will sit in a lineup with existing telco gray racks and ladder rack without looking odd. Powder coat over ASTM A570 grade 33 steel also holds up to handling during equipment moves better than a painted finish.