B-Line Eaton series open racks, Aluminum, Rack width 23, Mounting spaces: 49, Telco gray powder coat, Includes #12-24 panel mounting holes, Self-supp

No. The SB558096UTG is a 23 inch rack, so it takes 23 inch wide equipment or 19 inch gear fitted with 19-to-23 inch reducer brackets. Standard 19 inch telecom and data equipment will not span the rails on its own. If your plant is all 19 inch EIA gear, order a 19 inch relay rack instead.

49 mounting spaces over a 96 inch tall frame. That is the usable panel height for stacking equipment, so plan your patch panels, switches and wire managers against 49 spaces, not against the raw 96 inches.

The rails are tapped for #12-24 panel mounting screws. Buy #12-24 rack screws and cage-nut-free hardware; 10-32 screws, which are the other common telecom thread, will not thread into these holes.

It is a self-supporting aluminum relay rack, so the frame stands on its own base without wall bracing. Standard practice is still to lag the base to the floor and, in seismic or high-traffic rooms, tie the top to overhead ladder rack. Because the frame weighs 36 lb empty, loaded equipment dominates the center of gravity, so floor anchoring matters once it is populated.

Aluminum and steel. The frame is aluminum, which is why the whole 96 inch rack comes in at 36 lb and one person can stand it up, with steel used in the hardware. Finish is a telco gray powder coat, the standard color for central office and telecom rooms.