The mark consists of the configuration of the shroud of a vehicle rooftop air conditioning unit, with multiple vertical, vent slots on the top half and bottom half of the sides of said shroud. The front of the top half of the shroud contains parallel indented slots, and has a slightly rounded end that slants upwardly to the top, and the front of the bottom half of the shroud slants downwardly to the bottom, wherein the forwardmost line of convergence of the top and bottom portions form a unitary bullet-nose profile.