B-Line Eaton series imperial cable tray and ladder, 4" height, 27.47" length, 42" width, Series 2-5 vertical outside bend, 45°, 24" radius, Aluminum

A vertical outside bend carries the tray run up or down over an obstruction, with the fitting bending away from the cable side so the cables ride the outside of the curve. The B-Line 4A-42-45VO24 does that at 45 degrees on a 24 inch radius, in a 42 inch tray width and 4 inch side rail height. If your run needs to turn the other direction relative to the cables, you want a vertical inside bend instead, not this one.

Aluminum. That is the reason it is a common pick for damp, coastal, and chemically aggressive environments where galvanized steel tray corrodes, and it is also why the fitting is light, at 7.275 lb for a 42 inch wide piece. Keep your hardware and grounding practice consistent with an aluminum system.

CSA is the certification carried on this aluminum vertical outside bend, so it can be specified on work where CSA marking is required. No other listing or rating is claimed for it.

B-Line model 4A-42-45VO24. The number reads out as 4 inch aluminum rail, 42 inch width, 45 degree vertical outside bend, 24 inch radius, which is exactly the fitting described here.

At 7.275 lb, the 42 inch wide aluminum bend is a one-person lift on a lift or ladder, which is a practical difference from the steel equivalent in the same width. Bolting it between two sections overhead is still easier with a second set of hands to hold alignment.