C.R. LAURENCE TSS12 CRL 12" Aluminium Side Slats. Make your own glass truck rack, or repair an old one with this CRL 12" Aluminium Side Slat. This heavy duty slats is made of anodized aluminium so they won"t rust or split, and has 7/16" (11 mm) wide vinyl insert strips to cushion the glass. Installation with rivets or screws is easy, and the Vinyl Cushion is easily replaced when worn. These CRL Aluminium Side Slats are also virtually maintenance-free..