B-Line Eaton series imperial cable tray and ladder, 6" Height, 43.5625" Length, 9" Width, Series 2-5 horizontal bend, Aluminum, 90° Angle, 36" Radius

That's exactly what it's sized for. The 6A-09-90HB36 is a Series 2-5 horizontal bend with a 9 inch inside width and 6 inch side rail height, in aluminum, so it mates to straight aluminum tray of the same 9 inch width and 6 inch rail depth. Mixing rail heights at a fitting throws off the splice plate holes, so keep the 6 inch rail through the turn.

Allow for the fitting's overall 43.5625 inch dimension on each leg of the turn: with a 36 inch radius plus the 9 inch tray width, the outside of the sweep runs out past a yard from the centerline intersection. Check that against beams, ductwork and sprinkler mains before you commit the hangers, because a 36 inch radius bend is not something you can squeeze into a corner.

Order it as 6A-09-90HB36. Reading the code: 6 inch rail height, aluminum, 09 for 9 inch width, 90 degree horizontal bend, 36 inch radius. That's the number to put on a submittal or match against a drawing callout.

The 6A-09-90HB36 ships as the bend itself, at 17.6 lb. Splice plates, hardware and hangers or trapeze supports are separate line items on a tray order, so count two splice connections per fitting and add them to the takeoff along with the support at each end of the sweep.

CE is the certification carried on the 6A-09-90HB36 aluminum horizontal bend. If your spec calls for a different listing on tray fittings, confirm the requirement against the project documents before substituting.