B-Line Eaton series imperial cable tray and ladder, 4" Height, 14.97" Length, 18" Width, 18" and 6" Tray widths, Series 2-5 right reducer, Aluminum

A right hand reducer joins a wider tray section to a narrower one, with the reduction taken off one side rather than split evenly. Eaton B-Line model 4A-18-RR06 takes an 18 inch wide tray down to a 6 inch wide tray, keeping one side rail in a straight line so the cables stay on that side of the run. Use it where a large feeder tray drops to a small branch tray and you want the straight edge to stay flush against a wall or an adjacent tray.

Yes. The reducer is built at 4 inch loading depth, so it lines up rail to rail with 4 inch deep Eaton B-Line imperial ladder tray on both the 18 inch and 6 inch ends. If your run is 5 or 6 inch deep tray, this piece is the wrong depth and you need the matching depth reducer instead.

It is aluminum, which is the usual choice for wet, humid, and coastal installations because it does not need a galvanized or painted coating to resist corrosion. Aluminum also keeps the fitting light: this one is 3.6 lb, so a single installer can hold it up while bolting the splice plates.

Order Eaton B-Line part number 4A-18-RR06. That number breaks down to a 4 inch depth aluminum Series 2-5 right reducer running from 18 inch tray width down to 6 inch tray width. It is a single configuration, so there are no finish or size options to specify.