Electrical wiring trunking with flexible hinge

Electrical wiring trunking including a base section, preferably with a globally U-shaped profile, a cover section shaped to forcibly nest with said base section and attached laterally to said base section by a longitudinal hinge defined by a flexible and relatively deformable strip, said strip extending in a longitudinal direction between said base section and said cover section and being disposed on adjacent external flat portions of lateral walls of said base section and said cover section, and a rib member and a groove member in the vicinity of said hinge and on respective opposite sides of said longitudinal direction of said strip, wherein one of said rib member and said groove member is on said base section, the other of said rib member and said groove member is on said cover section, and said rib member engages in said groove member when said cover section is closed to establish a stiffening structure around said flexible strip.