Abstract: Method and apparatus for providing a duct arrangement adapted for installation through an opening in a wall (3), preferably of a vehicle. The arrangement includes an elongated ducting element (2) that has a sealing component (9) projecting therefrom on all sides and which is designed to bear against the edges of the opening so that sealing is produced between the two sides of the wall and establishes an installed position. Behind the component (9), when viewed in the direction of ducting, is a flexible section (5), which under loading of a part in front of the said section (5), permits displacement of the said part in relation to its unloaded longitudinal extent. The wall (3), when viewed from its front face in the direction of ducting, has a depression (6) formed all around the opening so that the opening essentially forms the lowest point of the depression (6). This configuration is designed to guide a tip of the ducting element (2) toward and through the opening to the installed position.