The knee bracket is made of durable urethane; one of today's most versatile, durable, and affordable architectural materials. The possibilities for custom projects are many. The Knee bracket adds a bit of flair to your decor. It can turn a plain shelving unit into a custom accent for your home. The Knee bracket also makes a great accent for cabinets, and more. Our urethane brackets and gingerbreads are suitable for outdoor applications. They are finished in white, and delivered to you ready for painting and custom finishing.