Abstract: A storm shutter slat includes an extruded body of a substantially rigid plastics material, and the body has opposite inner and outer side walls integrally connected by longitudinally extending transverse walls including spaced internal webs and opposite edge walls forming longitudinally extending hook portions and an undercut recess. The hook portions and recess provide for pivotally connecting the slat with adjacent slats and for rolling the connected slats into a coil. The extruded plastic body has a co-extruded core of substantially rigid plastics foam material which adheres or bonds to the walls of the body to provide the slat with a high bending strength, high durability against an impact, light weight and thermal insulation.