Dometic Fantastic K8011-05 OEM Roof Vent Dome Lid Lift ArmThis is a replacement lift arm for select Fantastic Roof Vents with a dome lid. Lift arms can fail if the internal gears get stripped due strong winds or other factors.Additional InfoArm Length6-1/2″Mounting Holes2-15/16″ to centerThis arm is for dome lid vents only. Note the side the roller is on.