Abstract: An arrangement including a passageway connection of the type for use in interconnecting the interior of a vehicle driver's cab and the interior of a sleeper unit mounted behind the cab comprising an outer accordian seal and an inner boot member. The outer accordian seal is mounted surrounding an external side of openings in the front and rear walls respectively, of a sleeper unit and driver's cab so as to provide a detachable water tight seal, while the inner boot member provides sound and temperature insulation as well as an attractive smooth appearance, and also coacting with a detachable end of the outer accordian seal so as to retain same in its assembled condition. The outer accordian seal also acts to protect the inner boot member which might otherwise be destroyed by exposure to the environment, truck washing equipment, and the like.