B-Line Eaton series wireway reducer, Feed through, Wireway reducer fitting, 12, Steel, ANSI 61 gray acrylic electrocoat finish, 8" X 8"

It's the transition piece between two different wireway sizes in a run. The Eaton B-Line 8866-12FRE is a feed-through reducer, so conductors pass straight through from the larger trough into the smaller one without a pull or splice point being created. Steel body, ANSI 61 gray acrylic electrocoat finish so it matches standard gray wireway and enclosures.

Yes on the 8 inch side. The fitting is dimensioned 8 x 8 x 8 inches, so it lands on an 8 inch square wireway trough at that end. Confirm the opposite end matches the smaller trough size you are reducing to before you order the run.

It's a NEMA 12 fitting, which covers indoor protection against falling dirt, circulating dust, lint, and dripping or splashing non-corrosive liquids. NEMA 12 is not a washdown or hosedown rating, so for direct spray or outdoor exposure you need a NEMA 3R or 4 wireway system instead.

Yes, it carries a UL Listing. That matters on the reducer as much as on the trough, since an unlisted fitting in a listed wireway run is what an inspector flags.

Feed through is the one to use when conductors simply continue from the large trough to the small one in the same direction, which is the common size-transition case. Pick a pull box or an elbow style fitting instead when you need to change direction or need access to reposition conductors at the transition. The 8866-12FRE is the feed-through version.

The finish is ANSI 61 gray acrylic electrocoat over steel, the same gray used across standard industrial wireway and control enclosures, so it blends into an existing gray trough run rather than standing out.

About 3.727 lb for the steel reducer itself. Light enough that it doesn't drive the hanger layout on its own, but add it to the filled weight of the trough sections on either side when you set support points.