B-Line Eaton series wireway elbow fitting, Lay-in, 90° elbow, outside-top opening, 12, Steel, ANSI 61 gray painted, 6" X 6"

Yes. The 66-12LE9AC is sized for 6 inch by 6 inch wireway, with a 6 inch height and 6 inch width at the openings and a 9.44 inch overall length/depth. It turns a run 90 degrees. If your trough is 4 x 4, 8 x 8 or 12 x 12, you need the matching size elbow instead, not this one.

On the 66-12LE9AC, the two openings sit on the outside and the top of the elbow body, so it takes a horizontal run and turns it up (or brings a vertical drop into a horizontal trough) around the outside of the corner. Order the outside-top version when the turn wraps the outer face of the bend; an inside-opening elbow makes the opposite turn. Getting this wrong means the fitting will not line up with your existing trough sections.

It is a NEMA 12 rated fitting, which covers indoor use against falling dirt, circulating dust and dripping non-corrosive liquids. It is not a wet-location or washdown rating, so for outdoor, hose-down or rain-exposed runs you want a NEMA 3R or 4 wireway system instead.

Yes, it is a lay-in fitting. The cover comes off so conductors drop straight into the channel at the corner rather than being pulled around the bend, which is the reason electricians use wireway instead of conduit on a heavily loaded feeder run.

Order Eaton B-Line part 66-12LE9AC. That number breaks down as 6 x 6 size, NEMA 12, lay-in, 90 degree elbow, outside-top opening, steel, ANSI 61 gray.

Steel body with an ANSI 61 gray painted finish, the standard gray used across B-Line wireway sections and fittings, so it matches an existing painted-steel run visually. For corrosive or coastal areas, painted steel is not the right choice, look at a stainless or coated system.

The 6 x 6 elbow weighs 11.61 lb bare, before conductors. Support the corner on its own hanger rather than cantilevering it off adjacent trough sections, especially on an overhead run.