B-Line Eaton series open racks, Aluminum, Rack width 23, Mounting spaces: 56, Aluminum - brushed, Self-supporting aluminum relay rack

No. The SB558108UAL is a 23 in rack, so the panel mounting rails are drilled on 23 inch centers, which is the telecom/central office standard rather than the 19 inch EIA width used by most IT and AV gear. Equipment built for 19 inch racks will not bolt in without 19 to 23 inch adapter brackets. If your gear is all 19 inch, order a 19 inch relay rack instead.

It stands 108 in tall and provides 56 mounting spaces. At that height you need roughly nine feet of clear ceiling, plus room to tip it upright during install, so check overhead sprinklers, cable tray and ductwork before it goes in.

It is described as a self-supporting aluminum relay rack, so the frame stands on its own base without a wall or ceiling brace. Standard practice in a telecom room is still to anchor the base to the floor and, where overhead ladder rack is present, tie the top of the rack to it for seismic and cable-load stability.

The SB558108UAL is built from aluminum and steel and weighs 39 lb, which is light enough for one person to handle and stand up in a cramped closet. Aluminum frames are the common choice for telecom and cross-connect work where weight and corrosion matter. For very heavy server or battery loads, a steel frame or an enclosed cabinet is the better call.

The frame is 23 in wide. Open relay racks like this are open front and back with no side panels, so plan aisle clearance on both faces for patch and equipment access rather than just a front-access cabinet gap. Confirm your floor plan allows the full 108 in vertical clearance as well.

What is defined here is the rack frame itself, model SB558108UAL, in 23 in width with 56 mounting spaces. Rack screws, cable management, ground kits and floor anchors are ordered separately, so build those into the job list before the install date.

The finish is brushed aluminum, a bare mill-type surface rather than a painted black rack. It matches the traditional silver relay racks already in most central office and telecom rooms. Because it is unpainted, bonding hardware lands on bare metal, but you should still use a listed rack grounding kit with paint-piercing or star washers at the busbar connection.