A raceway structure for a prewired wall panel, which structure provides a raceway formed by a single upwardly opening channel-shaped member which releasably attaches to the lower edge of the panel frame. Each leg of this channel member forms an openable side cover. At the end of a series of panels, a...http://www.google.es/patents/US4596098?utm_source=gb-gplus-sharePatente US4596098 - Snap-fit raceway arrangement
