Introducing Harman Fensterbau to America. Designed and produced in Germany, our manufacturing partner has been producing high quality windows and doors for over 80 years and is recognized leader throughout Europe. Built to exacting standards the level of precision and attention to detail is intended for decades of trouble-free and high-performance operation. All of our products are triple-glazed and far exceeds current performance requirements for U.S. window and door manufacturers. Our product offerings are clearly for the discerning and those who expect the very best.