Abstract: A raceway (10) for electric wiring or other is U-shaped defined by a base (11) and a pair of walls (12), which extend substantially perpendicularly from said base, so as to house electrical or other types of wiring inside of it, each wall being made in the form of a plurality of separate shaped strips (13), each shaped strip (13) having a zone (30) made from soft plastic material on at least a portion of the free end (14), inside and/or outside the raceway (10).