We have taken our most popular window box style to the next step with our ArmoreCoat Bronze Lancaster Window Box. This window box is our most popular style and has only been more beautified with the addition of a bronze coat that will patina over time. This is a great option for the homeowner who loves bronze, but does not love the cost of solid bronze. The window box is made from fiberglass, which is a naturally mold-proof, rot-proof, and insect-proof material. It includes a cleat mounting system, making installation quick and easy. Call us at 888-427-3362 to request a free estimate for custom sizes.