windows and doors in a home are bronze rather than aluminum. An aluminum window frame fulfills its purpose,But a bronze window frame can last two centuries and is truly beautiful, Shaughnessy produce the bronze alloy profile professionally, the detailed Product Description as follows: 1) Easy to install 2) Available in various sizes 3) High quality standards 4) Long usable life 5) Fire resistant 6) Weather resistant 7) Impact resistant 9) Soundproof Our extrusion products such as the one displayed in the picture are available for selling. We can modify the product according to Customer's drawings ,specification,or samples.