Abstract: An improved shutter panel designed to fit over window openings in the advent of high winds or driving rains and thereby protect against glass breakage and water damage. The shutter panel is bounded by a rectangular frame made of U-shaped metal channels, which houses a centrally located steel sheet having a series of spaced apart parallel V-shaped grooves and a pair of sheets of extruded polystyrene designed to lie against the opposite sides of the steel sheet. A sheet of woven plastic netting is spread over the outermost surfaces of the two sheets of polystyrene and then a layer of stucco is troweled over each sheet of netting and allowed to air dry, creating a strong light weight shutter panel.