B-Line Eaton series open racks, Aluminum finish, Trays offer top and bottom adjustable cable support, Silver powder coat, 19" Rack mounted horizontal

Yes. The SB81319UT3SL is a 19 inch rack mounted horizontal transition tray, so it mounts in the standard 19 inch EIA rack or open frame rail spacing. Width is 19 in, height 3.5 in (2 rack units), and depth 3.5 in.

It does. The tray provides adjustable cable support on both the top and bottom, so you can route cable coming down from overhead runway and cable coming up from below through the same 2U position, and set the support to the bundle size you actually have.

It occupies 3.5 inches of vertical rail space, which is 2U in a standard EIA rack. Plan panel layout around that when you are budgeting rack space between patch panels and switches.

Aluminum, with a silver powder coat finish. That keeps it light (3 lb) and matches the aluminum silver look of B-Line open frame relay racks in the same series, so it blends in rather than standing out against a black steel frame.

It is the handoff point between vertical cable managers or overhead runway and the horizontal path across the rack face. Cable lands on the tray, gets dressed, and then breaks out to patch panels or equipment. The adjustable top and bottom supports hold the bundle in place so weight is not hanging off the panel ports. If you instead need cable carried up the side of the frame, that is a vertical manager job, not this part.

Depth is 3.5 inches. That is a shallow tray, so it works in open frame two post racks where there is no cabinet door to clear, and it will not crowd a front aisle. Deep cable loops need a deeper tray or a runway above the rack.

Order Eaton B-Line MPN SB81319UT3SL. That is the 19 inch horizontal transition tray in aluminum with the silver powder coat finish, and it is the only configuration under that number.

At 3 lb it is a one person install on a 19 inch rack. Weight is low because the tray is aluminum rather than formed steel.