B-Line Eaton series imperial cable tray and ladder, 4" Height, 45.0625" Length, 12" Width, Series 2-5 horizontal bend, Aluminum, 90° Angle, 36" Radius

Yes, as long as the straight sections are 12 inch inside width and 4 inch height. The 4A-12-90HB36 is built as a 12 inch wide, 4 inch high aluminum fitting, so the side rail depth and loading width line up with matching 4 inch deep aluminum tray and no transition piece is needed.

Plan for the full 45-1/16 inch overall dimension of the fitting. The 4A-12-90HB36 turns 90 degrees on a 36 inch radius, so the arc sweeps well past the centerline of the run and the fitting measures 45.0625 inches along its length. Set your support points and wall clearances off that number, not off the 36 inch radius alone.

It is a horizontal bend only. The 4A-12-90HB36 turns the tray run 90 degrees in the flat plane, left or right. For a change in elevation you need a vertical inside or outside bend instead, which is a different fitting geometry.

Cable bend radius. A 36 inch radius horizontal bend gives large power and fiber conductors a gentle sweep through the turn, which is what you want when the cable manufacturer's minimum bending radius is larger than a short-radius elbow can deliver. Tighter radius fittings save space but force the cable harder; this one trades footprint for cable protection.

Aluminum is the usual choice where corrosion is a concern and where crews want a lighter fitting to handle overhead. This bend is aluminum throughout and weighs 15.186 lb, so a single installer can set it on the trapeze without a lift. Where you need maximum load capacity over long spans instead, steel tray is the alternative.

Yes, the 4A-12-90HB36 horizontal bend is CSA certified, which is what most Canadian jurisdictions and spec writers look for on cable tray fittings.

Read it in pieces: 4 is the 4 inch side rail height, A is aluminum, 12 is the 12 inch loading width, 90HB is the 90 degree horizontal bend, and 36 is the 36 inch radius. It is an Eaton B-Line Series 2-5 fitting.