B-Line Eaton series imperial cable tray and ladder, 4" Height, 23.598" Length, 30" Width, Series 2-5 vertical outside bend, Aluminum, 30° Angle, 36" R

A vertical outside bend carries the tray run over an obstruction or up a change in elevation, bending away from the cable side. This Eaton B-Line piece turns the run 30 degrees on a 36 inch radius, so the cables sweep over the rise instead of breaking at a sharp corner. If your run needs to drop down and around instead, you want the vertical inside bend of the same degree and radius, not this fitting.

Lay out 23.598 inches of run length for the fitting itself on a 36 inch radius. Cut your straight sections to suit after subtracting that, since the bend arrives fabricated and is not field-trimmable.

Aluminum. That keeps the fitting light and makes it a reasonable pick for damp or mildly corrosive environments where plain carbon steel would need coating. Match the material through the run, since mixing aluminum with steel tray at a splice invites galvanic issues.

It is CSA certified, which is the listing an inspector on a Canadian project will look for on the tray fitting.

Eaton B-Line part 4A-30-30VO36. The code reads out as 4 inch aluminum, 30 inch width, 30 degree vertical outside, 36 inch radius, so the adjacent radius and angle options change the trailing digits.

The 4A-30-30VO36 is the fabricated bend section itself. Plan on ordering splice plates and connection hardware separately to tie it into the straight tray at each end, along with your hangers or trapeze supports.