B-Line Eaton series imperial cable tray and ladder, 6" Height, 28.0625" Length, 18" Width, Series 2-5 horizontal bend, Aluminum, 30° Angle, 36" Radius

It matches a 6 inch deep, 18 inch wide aluminum ladder tray run. The bend is part of the Eaton B-Line Series 2-5 imperial family, so it splices into straight sections of the same 6 inch load depth and 18 inch inside width. If your run is a different width (12, 24, 30 inch, etc.) you need the bend sized to that width instead.

Plan on roughly 28-1/16 inches along the length of the fitting, measured as supplied. The bend turns the run 30 degrees on a 36 inch inside radius, so on a drawing you set the 36 inch radius off the inside rail and pick the run back up at 30 degrees. Tight ceiling spaces or close column lines are where this matters most, since the 36 inch radius is the sweeping type rather than a short-radius turn.

Aluminum. That makes it a common pick for damp, coastal, or lightly corrosive environments where plated steel would need a coating, and it keeps the fitting light enough for one person to set on the supports. Match the material to the rest of your run: mixing aluminum fittings into a steel tray system creates dissimilar metal contact at the splice plates and complicates bonding.

Order splice plates and connection hardware separately. The 6A-18-30HB36 is the bend section itself; joining it to the adjacent straight sections takes the splice plate kit specified for Series 2-5 aluminum tray at 6 inch depth. Also budget for the supports at each side of the fitting, since a bend is normally supported near both connection points.

It carries a CE marking. That is the only marking recorded for the 6A-18-30HB36 aluminum horizontal bend, so if your specification calls for a particular listing beyond that, confirm it against the manufacturer submittal for the full Series 2-5 system.