B-Line Eaton series wireway elbow fitting, Lay-in, 90° elbow, inside opening, 1, Steel, ANSI 61 gray painted, 4" X 4"

Yes. The Eaton B-Line 44 HSLIN is sized for 4 inch by 4 inch lay-in wireway, with a 4 inch height and 4 inch length/depth matching the trough cross section. It will not mate with 6x6 or 8x8 wireway, so the run it turns has to be 4x4 throughout.

Inside opening means the elbow turns toward the inside of the corner, so the open lay-in face is on the short (concave) side of the 90. Hold the direction of your run: if the wireway needs to change direction and the cover face stays on the inner side of the turn, this is the fitting. If the open face falls on the long, outer side of the corner, you need the outside-opening version of the same 4x4 elbow instead. Getting this backwards means the conductors cannot be laid in and the cover will not line up with the adjoining trough covers.

Yes, the 44 HSLIN elbow is UL Listed. That matters on a plan-and-spec job where the inspector wants the whole lay-in wireway assembly, fittings included, to carry a listing rather than just the straight sections.

Ordering is for the 44 HSLIN elbow fitting itself, one model, in steel with ANSI 61 gray paint. Plan separately for the straight wireway sections it connects and for any connectors, hangers, or end plates your run needs. Confirm the quantity of elbows against the number of 90 degree turns on your layout before you order.

It is a lay-in fitting, so wires drop into the open face and the cover closes over them. That is the point of a lay-in wireway corner: you avoid pulling cable around a 90, which is the hard part of a conduit turn. If your design pulls conductors through conduit rather than laying them into a trough, a wireway elbow is the wrong part and you want a conduit elbow or condulet body instead.

The finish is ANSI 61 gray paint over steel, which is the standard gray used across Eaton B-Line lay-in wireway and most industrial control gear. If your existing trough is ANSI 61 gray, this elbow will blend with it. If the run is a white or custom color, expect a visible difference at the corner.

3.318 lb. Light enough that the elbow itself is not the load driver, but on a suspended run you still want hangers close to the corner because the turn is where the mechanical stress on the joint concentrates.