Material: Aluminum Stainless Steel Alloy (With some molded parts) and EPDM Rubber Seal coated . Can be applied with a variety of different situations and mounting ways. .With stainless steel fasteners to press or adhere the plank. . EPDM Rubber (Ethylene Propylene Diene Monomer): Widely used in car windshield. Ability to withstand temperatures up to 160 * and anti chemicals. Stable in all weather and can be used for more than 10 years.