B-Line Eaton series open racks, Aluminum, Rack width 23, Mounting spaces: 49, Aluminum - brushed, Includes #12-24 panel mounting holes, Self-supporti

The SB558096UAL is a 7-foot class frame at 96 inches tall with 49 mounting spaces drilled into the rails. That gives you 49 usable positions for panels, shelves and equipment ears across the full height of the upright.

The rails come drilled and tapped with #12-24 panel mounting holes, so you fasten equipment with #12-24 rack screws. Order those separately along with any cage nuts or washers your gear calls for, since the rack ships as the frame.

It is a self-supporting aluminum relay rack, so the frame stands on its own base once anchored to the floor. That said, a 96 inch open frame loaded with equipment is normally floor-anchored and often tied to overhead cable runway in a data or telecom room. The rack itself does not depend on a wall for support.

An open frame like the B-Line SB558096UAL gives you access from all four sides, easier cable dressing, and free air movement, with no doors or side panels to work around. Pick an enclosed cabinet instead when you need lockable security, dust control, or containment in a shared or public space. In a locked IDF or MDF the open relay rack is the usual choice, and at 36 lb it is far lighter to handle than a cabinet.

The frame weighs 36 lb, which is why it is aluminum rather than all steel. One person can carry and stand it, though setting a 96 inch upright and holding it plumb while you anchor it is a two-person job.

The frame is aluminum and steel with a brushed aluminum finish. Aluminum does not rust the way bare or painted steel does, which is one reason relay racks in telecom rooms and MDFs are specified in aluminum. It is still an indoor equipment frame, not a weather-rated enclosure.