B-Line Eaton series wireway telescoping fitting, 6" X 6" feed through, Wireway telescoping fitting, No cutting or welding required, 4X, Stainless ste

It is sized for 6 x 6 inch wireway, joining two runs of that size end to end as a feed through connection. The fitting body measures 5.82 inches high by 5.82 inches wide with a 15.5 inch length, so it telescopes across the gap between two 6 x 6 sections.

No. The 66-4XSFTF is built to close a gap between two wireway runs with no cutting or welding, which is the whole point of a telescoping fitting. You slide it to length in the field rather than fabricating a filler piece, which keeps the stainless steel and its brushed finish intact and avoids burning through a corrosion resistant surface on site.

The 66-4XSFTF is a NEMA 4X fitting in stainless steel, so it suits washdown areas, food processing, wet locations and corrosive environments where a painted carbon steel wireway would not hold up. To keep the rating you need the mating wireway and every other fitting in the run to be 4X as well; a single 1 or 3R component downgrades the whole enclosure system.

Feed through means conductors pass straight through in a line, so this piece joins two in-line 6 x 6 runs and nothing else. If you need to turn a corner, branch a run, or close off the end of a wireway, a feed through fitting is the wrong part, look for an elbow, tee or end plate in the same 6 x 6 NEMA 4X stainless family instead.

Dimensionally it mates with 6 x 6 wireway, but visually it will not match. This piece is stainless steel with a brushed finish, so alongside a gray painted carbon steel run it reads as a different material. For facilities standardizing on appearance or on 4X corrosion resistance, spec the whole run in stainless rather than mixing.

Order model 66-4XSFTF from Eaton's B-Line series. That single number covers the 6 x 6 NEMA 4X stainless steel feed through telescoping fitting; there are no finish or size options to specify with it.

It weighs 10.668 lb, light enough for one electrician to set in place on a supported run, though at 15.5 inches long you will want the adjoining wireway sections already hung and squared before you slide it in.