B-Line Eaton series wireway reducer, Center, Wireway reducer fitting, 12, Steel, 8" X 8"

It transitions one wireway size down to another within a straight run, keeping the conductors enclosed through the change. The 8866-12FRC is the center-offset version, meaning the smaller opening lines up on the centerline of the larger body rather than flush to one side. Body is steel, and the fitting is built to the NEMA 12 rating of the wireway system it joins.

Both. The fitting is NEMA 12, so it suits indoor industrial areas where dust, falling dirt and dripping non-corrosive liquids are the concern, and it is UL Listed. Keep the whole run NEMA 12, though: pairing a NEMA 12 reducer with an unrated or NEMA 1 wireway section drops the rating of the assembly to the weakest piece.

Yes, it is the 8 x 8 inch reducer in the Eaton B-Line series, so it connects to 8 x 8 inch wireway on the large end. Overall the fitting measures 9.75 inches in both height and width, which is the flange footprint you need to allow for at the joint when you lay out the run against a wall or strut.

Order it as Eaton B-Line 8866-12FRC. It weighs 3.725 lb, light enough for one person to hold in place while the flange screws go in, so no extra support is needed at the fitting itself beyond the normal wireway hangers.

Use the center type, which is what the 8866-12FRC is, when you want the smaller wireway centered on the larger one, typical for a run supported symmetrically on strut or where both ends need to stay on the same centerline. An offset or flush reducer is the one to specify when the run has to stay tight and flush along a wall, a ceiling, or the top of an enclosure lineup.

The item supplied is the steel reducer fitting itself. Plan on the connectors, clamps or screws that your wireway series uses for section-to-section joints being ordered separately, along with any hangers or strut supports for the run.