B-Line Eaton series imperial cable tray and ladder, 4" Height, 16.72" Length, 24" Width, 24" and 9" Tray widths, Series 2-5 right reducer, Aluminum

It is a right-hand reducer for aluminum ladder cable tray, taking a 24 inch wide tray down to a 9 inch wide tray. "Right" means the reduction is made on the right side of the run as you look along the direction of the tray, so the opposite (left) side rails stay in line. Overall it measures 4 inch height, 16.72 inch length and 24 inch width.

Use a right reducer like the 4A-24-RR09 when one side of the run has to stay on a fixed line, for example tight against a wall, a beam, or a continuous support line, and all of the width change is taken on the right side. A straight or centered reducer splits the change evenly on both sides and shifts the tray centerline less, which suits runs hung from center-pivot trapeze hangers. Handing is not field-reversible, so confirm which side you are giving up before you order.

Aluminum. Keep the fitting material the same as the tray it splices into, both for load behavior and to avoid dissimilar metal contact at the splice plates. If your existing run is galvanized steel tray, order the steel version of the Series 2-5 reducer rather than this one.

Eaton B-Line part number 4A-24-RR09. The prefix reads as 4 inch depth, aluminum, 24 inch incoming width, right reducer to 9 inch.

The fitting itself weighs 4.6 lb, so it adds very little to the dead load at the transition. It still needs support close to the splice on each side per your tray support spacing, since the fitting is not intended to span between hangers on its own.

It is CE marked. That is the only marking carried on the record for this aluminum Series 2-5 right reducer.