B-Line Eaton series imperial cable tray and ladder, 4" Height, 27.000" Length, 18" Width, Series 2-5 vertical outside bend, Aluminum, 90° Angle, 24" R

Yes. The 4A-18-90VO24 vertical outside bend is built for 18 inch wide tray with a 4 inch loading depth, in aluminum, so it mates to a matching Series 2-5 aluminum straight section of the same width and rail height. Width and rail depth both have to match the run, or the side rails will not line up at the splice.

It is about which way the tray turns relative to the cable load. A vertical outside bend, like the 4A-18-90VO24, takes the run up and over an obstruction, with the bend radius on the outside of the turn. A vertical inside bend does the opposite, dropping the run down. They are not interchangeable, so confirm the direction of travel on the drawing before ordering; this one turns a full 90 degrees on a 24 inch radius.

Plan for the full sweep. The fitting has a 24 inch radius and turns 90 degrees, and its overall length is 27 inches, so you need at least that much straight-line room in the direction of travel plus room for the splice plates at each end. A 24 inch radius is the larger bend option and is what you use where cable bend radius limits matter, such as large power or fiber runs.

It is aluminum. That is the usual pick for outdoor, damp, coastal or chemically aggressive environments where a plain steel tray would need galvanizing or paint, and it keeps the fitting light. Aluminum tray also has to be bonded and grounded per the electrical code for the installation, so allow for a grounding jumper across the splices.

Order your splice connectors and hanger hardware separately. What is covered here is the 18 inch wide, 4 inch deep aluminum 90 degree vertical outside bend itself, model 4A-18-90VO24. You will also want support within the distance your tray load table calls for on either side of the bend.

Specify Eaton B-Line 4A-18-90VO24. That call-out breaks down as 4 inch rail height, aluminum, 18 inch width, 90 degree vertical outside bend, 24 inch radius, in the Series 2-5 imperial ladder tray family.

The fitting weighs 9.8 lb, light enough for one electrician to set on trapeze hangers overhead without a lift, which is one of the practical reasons aluminum gets specified over steel on long elevated runs.