A trim panel such as an end panel for an instrument panel of a motor vehicle, has a body including an exposed face and a flange that interfaces with an elastomeric seal on the motor vehicle. At least one tubercle is provided on that flange. A method of installing a trim panel on a motor vehicle adjacent to an elastomeric seal is also disclosed. Tubercles on the flange gently push the elastomeric seal away from the flange during installation protecting the surface of the elastomeric seal from marring or other damage during the installation process.