B-Line Eaton series open racks, Steel, Flat black powder coat, 12-24 panel mounting holes, 58 mounting spaces, Top angle style, Seiemic zone 4, netwo

The SB506090XUFB gives you 58 mounting spaces over a 90 inch tall frame. That is enough vertical room for a full network bay build, and it is more usable space than a standard 45U enclosure, so plan your patch panel and switch layout around 58 positions rather than assuming a 45U count.

The rails are punched 12-24 panel mounting holes, so you need 12-24 rack screws and matching cage-free threaded mounting hardware. Equipment shipped with 10-32 screws will not thread into these rails, so order 12-24 screws with your gear.

It is built as a seismic zone 4 network bay closed duct rack, so it is the version to specify where a project drawing calls for zone 4 anchoring. It is also UL Listed. Floor anchoring and any overhead bracing still have to be installed per the engineer's detail for the room.

Footprint works out from 19 inches wide by 39.4375 inches deep, standing 90 inches tall. Check the door height and ceiling of the telecom room before delivery, since a 90 inch frame will not tip through a low opening once assembled, and leave working aisle in front and behind for cable dress.

An open frame rack such as this one leaves equipment accessible on all four sides and lets heat escape without fans, which suits a secured telecom or IDF room where physical access is already controlled. A locking enclosed cabinet is the better call where the equipment sits in shared space, a corridor, or an area where dust and tampering are concerns. This frame is a top angle style network bay with closed duct, so it is intended for a row of bays with vertical cable management, not a standalone cabinet in an office.

At 105 lb for the frame, plan on two people to stand it up and anchor it. The weight is the bare rack only, so account for the loaded weight of switches, patch panels, and power strips when checking the floor and the anchor detail.

If the existing bays are Eaton B-Line series open frame racks in flat black powder coat with 12-24 punched rails, this one lines up with them: 90 inches tall, 19 inch width, top angle style. Where the room was built with 10-32 rails or a different frame height, mixing this in means two different screw sizes and mismatched rail elevations across the row.

The frame is steel to ASTM A1011SS with a flat black powder coat. That finish is standard for data room bays, keeps glare down behind glass front doors, and stands up to the handling a rack takes during cable pulls better than a painted finish.