B-Line SB596S19156STG Eaton series open frame racks, Steel, Telco gray powder coat finish, Double sided rack mounted shelf. Heavy duty, solid shelf, Four mounting spaces required, 200 lb load cap., Shelves and #12-24 mounting hardware included

Rated at 200 lb load capacity. It is a heavy duty solid steel shelf, so it will carry a UPS, a stack of switches, or non-rack-mount gear that has no ears. The shelf itself weighs 17.3 lb, which is worth knowing if you are loading it into a rack that is already near its own frame limit.

Yes, #12-24 mounting hardware ships with the shelf, so you do not need to source screws separately. That means it is intended for racks with tapped #12-24 rails, which is the common thread on Eaton B-Line open frame telecom racks. If your rack has 10-32 tapped rails or square hole cage nut rails, the included screws will not thread.

Four mounting spaces, which is 4U of vertical rack height. The shelf face itself is 6 inches high. Plan your rack elevation around 4U consumed, and leave clearance above for whatever sits on the shelf, since equipment placed on it eats additional rack space that the shelf spec does not account for.

A double sided shelf like the SB596S19156STG bolts to both the front and rear rails of an open frame rack, so the 30 inch deep platform is supported at both ends and carries the full 200 lb rating. A cantilever or single sided shelf attaches only at the front rails and is shorter, which limits load and leaves deep equipment overhanging unsupported. Use the double sided version for UPS units, servers, and other heavy or deep gear; the cantilever type is fine for a monitor, a keyboard, or light patching tools.

The shelf is finished in telco gray powder coat, the standard color Eaton B-Line uses across its open frame telecom rack line, so it matches racks and accessories in that same finish. If your existing racks are black or a custom color, the gray shelf will not match visually, though it mounts the same.

Solid steel deck, not vented. For gear with bottom or side intake vents, a solid shelf blocks airflow under the unit, so keep hot equipment spaced and rely on the open frame rack's ambient airflow. If you need bottom breathing for a switch or amplifier, a vented shelf is the better choice.