Abstract: A cable-guide trough has a row of like U-shaped cross bars aligned with one another and lying in respective generally parallel and longitudinally spaced planes and a plurality of generally parallel longitudinal bars joined to the cross bars and each having a first laterally deflected end portion carrying a first one of the cross bars and an opposite second end portion carrying a second one of the cross bars. The first cross bar and the first end portions are dimensioned to nest with the second the cross bar and second end portions of another such trough to couple the troughs together.