Trapezoidal roof connector Trapez IV, with integrated plastic spacer for optional sliding fastening of the support rail to compensate for heat-related expansion, the enlarged contact surface allows higher forces to be transferred via the trapezoidal sheet, at least two fasteners per profile with the clamps aligned from the profile towards the eaves, pre-assembled EPDM rubber strips (UV-resistant) ensure the necessary tightness when screwing, suitable drilling screws including EPDM sealing washers available separately