Tubelite, Walker, Mich., displayed its 300 ES energy-efficient curtain wall. Officials at the company also announced that as of Dec. 1, 100 percent of its extrusions will be made from recycled content. “The introduction of our acid-etch anodize allowed us to do this,” said Ken Werbowy, president. “The way we see it, [Leadership in Energy and Environmental Design] is just part of sustainable design. Using recycled materials is also very important.”