Plaster panel with metal edges

Claim 1

IN A REENFORCED PLASTIC PANEL HAVING LAYERS OF LIGHT TRANSMITTING PLASTIC MATERIAL REENFORCED WITH FIBER GLASS, A PAIR OF NARROW FLAT STRIPS OF SHEET METAL IN UNINTERRUPTED SUBSTANTIALLY COPLANAR RELATIONSHIP WITH ONE ANOTHER AND ONE OF SAID LAYERS, EACH STRIP EXTENDING FROM ONE END TO THE OTHER END OF SAID PANEL AND EACH STRIP HAVING PERFORATIONS BETWEEN ITS INNER AND OUTER EDGES IN CROSSWISE ALIGNMENT WITH THE OTHER STRIP, THE PERFORATIONS OF EACH STRIP PASSING THERETHROUGH AND IN ADJACENT AND PARALLEL RELATIONSHIP TO A LONGITUDINAL EDGE OF SAID PANEL, SAID STRIPS BEING PARTIALLY COVERED ON EACH SIDE THEREOF BY SAID LAYERS WHICH TERMINATE BETWEEN THE LONGITUDINAL EDGES OF SAID STRIPS FOR INTERCONNECTING COPLANAR RELATIONSHIP BETWEEN THE STRIPS FROM ONE END TO THE OTHER END THEREOF TO COVER SAID PERFORATIONS WITH PORTIONS OF AT LEAST ONE OF SAID LAYERS EXTENDING THROUGH THE PERFORATIONS OF EACH STRIP TO BE JOINED TO ANOTHER OF SAID LAYERS BY PLASTIC MATERIAL PASSING THROUGH SAID PERFORATIONS FROM SAID ONE OF SAID LAYERS TO SAID ANOTHER OF SAID LAYERS TO EFFECT BONDING THEREBETWEEN TO SECURE SAID STRIP TO SAID PANEL, AND A LENGTHWISE PART OF EACH STRIP INCLUDING AN EDGE THEREOF TO EXTEND BEYOND THE LONGITUDINAL EDGE OF THE PLASTIC PANEL ALONG THE LENGTH THEREOF AND HAVING BOTH SIDES OF SAID PART IN EXPOSED AND UNCOVERED RELATIONSHIP WITH RESPECT TO SAID PANEL.