Abstract: An interchangeable automobile louver set that is adapted to be detachably mounted on a rear, downwardly, rearwardly inclined automobile window glass and includes a plurality of louvers independently horizontally mounted to a plurality of independent, vertically disposed stanchions. Each louver includes longitudinally spaced apart ends spanned by a pair of vertically spaced sides and a front edge which has a profile that conforms to the profile of the confronting portion of the window glass regardless of which vertically spaced side is uppermost. Each louver is attached by fasteners and each stanchion has the capability to be reversible without modification to the louvers or stanchions. For example, the first side of all of the louvers could match the color of the vehicle and the second side could be a standard color (i.e. black). The louvers are readily detachable and reversible to change the appearance of the automobile.