Product Approvals All Accordion Retention Rolldown Storm Panels DCA. ACCORDION PRODUCT APPROVAL DRWG. See more DCA. 40 MM ROLLDOWN PRODUCT APPROVAL DRWG. See more DCA. 50MM ROLLDOWN PRODUCT APPROVAL DRWG. See more DCA. 60MM ROLLDOWN PRODUCT APPROVAL DRWG. See more FBC. 40MM,55MM,60MM, END RETENTION PRODUCT APPROVALS DRWG. See more 0.029" (min.) Galvanized Steel Storm Panels Shutter See more 0.050" Solid Bertha Aluminum Storm Panel Shutter See more Clearguard Polycarbonate Storm Panel Shutter See more