B-Line Eaton series open racks, Steel, Telco gray powder coat, 12-24 panel mounting holes, 45 mounting spaces, Top channel style, Seiemic zone 4, net

Panel mounting holes are 12-24 tapped, so equipment and patch panels mount with 12-24 screws directly into the rails. No cage nuts, and you cannot use 10-32 hardware in them.

Yes. The frame is a 19 inch rack width, which is the EIA standard panel width used by patch panels, switches and rack-mount UPS units.

It is built as a seismic zone 4 network bay open duct rack, so it is the version to specify where local code calls for zone 4 seismic bracing. It is also UL Listed. Anchoring to the floor slab and any required overhead bracing still has to be done per the engineer's detail.

Top channel style means the frame is finished with a channel across the top of the uprights. That channel is the tie-in point for overhead cable runway or ladder rack and for bay-to-bay bracing when you gang several frames in a row. The runway, waterfall and any vertical duct are separate items, not part of the frame.

An open frame like the SB5764090TG suits a secured MDF or IDF room where you want full access to both sides of the equipment, easy cable dressing, and no airflow restriction. Choose an enclosed cabinet instead when the space is shared or public and the gear needs to be locked up, or when you need to keep dust off it. This is a frame only, so it offers no physical security for what is mounted in it.

Order Eaton B-Line part number SB5764090TG. That is the 90 inch, 45 space, 12-24 tapped, Telco gray seismic zone 4 open duct bay.

The frame weighs 117 lb on its own at 90 inches tall. Plan on two people to stand it up and hold it plumb while the base is anchored.

The frame is steel with a Telco gray powder coat, which is the standard telecom finish and is more durable than wet paint against scuffing from equipment being racked and unracked. It is intended for indoor dry locations, not exterior exposure.