Duratherm Window Corporation
For nearly 40 years, leading architects have chosen Duratherm for unparalleled quality, performance, and commitment to projects of lasting importance. Founded to create monumental windows for residential and commercial use, Duratherm has extensive expertise on high-end projects that require load-bearing capability. 13 domestic and exotic wood species – many from FSC-certified sources.
Pella Corporation 
Founded in 1925, Pella supplies wood and aluminum-clad wood windows and doors for commercial, institutional, and residential projects. Whether it's new construction or renovation, punched openings or window walls, Pella offers multiple product lines that allow architects to balance performance, aesthetics, and budget.
Solar Innovations
Solar Innovations, Inc. provides custom designed, manufactured, and tested timber walls which can be used in vertical or sloped applications, including skylights. Each system is offered in several glu laminate options, which provides increased strength when compared to solid wood, and, with an aluminum exterior, additional durability and longevity are benefits of this system.