Willpak Industries 2029 ABS Van Rear Window Louver for GMC/Chevrolet Fits: 1997-2013 Chevrolet Express/GM Savana These classic, custom-fitted, C-pillar louvers are thermoformed from a durable black ABS material and are easily installed; no drilling required All their products are manufactured to ensure the customer satisfaction of quality products with styling designed for fit and finish, second to none Install simply by placing over the existing glass with the supplied 3M double sided automotive-grade tape; on their own, or matched with their rear window louver (sold separately) Installation and attachment is now easier, and less invasive than ever; non-pop out window (fixed) and pop out window