Article supporting slat

In a luggage carrier for a car top, a load supporting slat having an extruded body provided with a central web and with an inverted channel portion at each side, the bottom of the outer sides of the channel portions extending below the web, the outer walls of the inverted channel portions remaining stationary when the bottoms thereof engage the car top and the web is moved downwardly into engagement with the top, wherein sloping webs are provided at the top of each of the inverted channel portions which move into substantial planar relation when the outer sides of the extruded body are relatively moved upwardly as the central web is moved down to engage the car top, said webs to provide support in a vertical direction for a metal molding, means securing the central web to the car top, and a metal molding having a downwardly offset central web and inwardly downwardly presenting channels at the sides, the uppermost portions of each of said metal molding channels supported by the planar tops of the adjacent respective portions of the body, the outer sides of the metal molding channels engaging a substantial portion of the outer sides of the channels of the body to prevent the extruded body from bulging outwardly when the carrier is loaded.