B-Line Eaton series imperial cable tray and ladder - Length 30 in, Width 6 in, Height 4 in - Aluminum

A horizontal expanding tee branches a cable tray run into a T while changing tray width across the fitting. The B-Line Eaton 4A-06-09-HT24 handles 6 inch and 9 inch tray widths in the same fitting, so it does the branch and the width transition in one piece. If every leg of your intersection is the same width, a plain horizontal tee is the fitting you want; the expanding version exists specifically so you don't have to add a separate reducer next to the tee.

It is built for 6 inch and 9 inch tray widths, and the fitting's own stated width is 6 inches. So it suits a run where one leg is 6 inch tray and the mating leg steps to 9 inch. For any other width pairing, you need a different fitting in the series.

Aluminum. That is the usual choice where weight and corrosion resistance matter, including outdoor and damp areas, and it keeps the fitting light enough for one person to set on the run. It also means you should pair it with aluminum tray and aluminum hardware rather than mixing in bare steel at the splice, to avoid dissimilar metal contact.

It weighs 16.36 lb and measures 30 inches long, 6 inches wide and 4 inches high. That is a one-man lift, but the 30 inch length means you should plan a support on each leg near the fitting rather than letting the tee hang between hangers.

Yes, CSA certification is carried on the 4A-06-09-HT24 expanding tee, which is what an inspector on a Canadian project will look for on tray fittings.

Order Eaton B-Line part number 4A-06-09-HT24. The 4A prefix is the aluminum Series 2-5 tray line, 06-09 is the 6 to 9 inch width transition, and HT24 is the horizontal tee at 24 inch radius.

The 4A-06-09-HT24 is supplied as the fitting itself. Splice plates, bolts and the hangers or supports at the intersection are ordered separately, so count the number of tray connections at the tee (three legs, three splice connections) when you build the material list.