B-Line Eaton series wireway nipple section, Feed through, Wireway nipple section, 4X rated, Stainless steel, Brushed finish, 6" X 6"

The Eaton B-Line 66-4XSFN1 nipple is sized for 6 x 6 inch wireway, with a 6 inch height and 6 inch width to match the trough cross section. It is about .938 inch deep, so it is a short coupling piece that joins two 6 x 6 sections or ties a wireway run to an adjacent enclosure rather than adding any real run length.

Yes. The 66-4XSFN1 nipple section carries a NEMA 4X rating, which covers hosedown, washdown and corrosive duty as well as outdoor exposure, and the body is stainless steel with a brushed finish. Keep the rating intact by using it only with other 4X rated wireway components and sealing the joint per the manufacturer's gasketing.

A feed through nipple is the short connector that passes conductors straight from one 6 x 6 wireway section or enclosure into the next. The 66-4XSFN1 is wired feed through, meaning conductors run continuously with no taps or splices made inside it. If you need to pull a run around a corner or branch it, you want an elbow or a tee fitting instead, not this piece.

Mechanically the opening is 6 x 6, so it lines up with a 6 x 6 trough, but pairing a stainless 4X nipple with a NEMA 1 painted steel wireway drops the whole run to the lowest rating in it, and dissimilar metals in a wet location invite galvanic corrosion. For a washdown or outdoor run, keep every section, cover and fitting stainless and 4X rated.

About 2.259 lb. It is light enough to be handled and set one handed while you line up the flange bolts, which matters when you are working off a ladder tying two hung wireway sections together.