B-Line Eaton series imperial cable tray and ladder, 6" Height, 69.0625" Length, 36" Width, Series 2-5 horizontal bend, Aluminum, 90° Angle, 48" Radius

It matches 36 inch wide, 6 inch deep aluminum tray. The 36 inch dimension is the inside tray width and the 6 inch is the side rail height, so it only lines up with straight sections of that same width and depth in the Series 2-5 family. Tray of any other width will not bolt up square at the splice.

No. A 90 degree horizontal bend turns the run left or right in the same plane. If the tray has to rise or drop, you need a vertical inside or outside elbow instead, and if it has to turn and change height you will use both fittings back to back. Ordering this one for an elevation change leaves you with a fitting you cannot install.

Bend radius is driven by the cable, not the tray. Larger power and fiber cables have a minimum bending radius, and a 48 inch radius fitting gives the conductors a gentle sweep through the corner instead of forcing them around a tight turn. On runs carrying large-diameter feeders or fiber, the wide radius is often what the cable manufacturer requires. For control wiring and small conductors a tighter radius fitting usually does the job in less space.

Aluminum. That is the reason it weighs 36.4 lb for a fitting this size, which makes a 36 inch wide bend something a two-man crew can set without a lift. Aluminum also holds up in damp and mildly corrosive environments where plain steel tray would need galvanizing or paint. Bear in mind aluminum tray is generally not bonded as an equipment grounding conductor without checking the system design.

The manufacturer part number is 6A-36-90HB48. Reading it out: 6 inch rail, aluminum, 36 inch width, 90 degree horizontal bend, 48 inch radius. That is the number to hand a distributor or put on a submittal.

Order the splice plates and bolt kits separately. A horizontal bend joins to the adjoining straight sections at two splice points, so budget a splice connector set for each end, plus a hanger or trapeze support near the fitting per the tray manufacturer's support spacing. The fitting is the formed bend itself.