Completed in the summer of 2014, the Knoch Knolls Nature Center in the Chicago suburb of Naperville recently received its LEED Platinum certification. The building was able to achieve the highest certification level offered by the U.S. Green Building Council in part because of its Weather Shield Signature Series direct set, awning and custom, triangle-shaped windows. The architect had originally specified aluminum windows but was convinced that the Signature Series’ aluminum clad exteriors and wood interiors would lend greater energy efficiency and provide the appearance of aluminum windows on the exterior with warm wood interiors that complemented the timber ceiling beams and other wood-centric design elements.