Founded in 1954, Kasson & Keller manufactures a wide range of windows and patio doors. The company uses virgin vinyl and nonconductive glass to make its products. It offers a variety of new construction windows, including Schoolhouse Classics and Brickmold Designers series. The company provides vinyl windows in various styles, such as double hungs, horizontal sliders, picture windows and specialty shapes, such as circle and arch tops. It also offers a variety of replacement windows that include a warm-edge insulating system. The company s windows feature ventilation and cam locks, extruded lift handles and balance covers. Its series of Saratoga hung windows features an interlocking system, lift handle and aluminum screen frame with fiberglass screen.