Installation frame without driver cutout. For vehicle with series flat roof and roof panel. The frame is glued with Sikaflex (Sikaflex for ordered from 01.06.2023 not included) and riveted with steel rivets (5 mm). In accordance with the body guideline of VW / Mercedes manufactured circumferential frame to reinforce the roof cutout. Maximum cutout width, longitudinally the roof panel is connected to the inner body panel.