Founded in 1982, Viwinco is a family-owned and operated manufacturer of custom-made vinyl windows and patio doors based in Morgantown, Pennsylvania. It produces nearly all of its products in-house, including its own tempered and laminated glass, and serves residential and commercial new-construction and replacement projects.
ENERGY STAR
Superior Window Manufacturing, IncSuperior Window Manufacturing is a family-owned Pittsburgh-area manufacturer of custom vinyl windows, incorporated in 1992, with a history in the window and construction fields dating to the 1970s. The company builds windows locally and provides installation services for homeowners and contractors across the Pittsburgh region. It also supplies and installs residential doors, while its wholesale option provides custom windows for customer installation.PITTSBURGH, PA
Vinylmax LLCVinylmax LLC is a family-owned window and door manufacturer founded in 1982 by Jim Doerger; the second generation of the Doerger family now leads the company. Its Hamilton, Ohio facility produces custom windows and doors, and the company also manufactures FlexScreen flexible window screens in-house.CLIFTON PARK, NY
Sprouse Windows & DoorsSprouse Windows & Doors has manufactured vinyl windows and sliding patio doors since 1972, building on West Virginia roots that include Sprouse Aluminum Products (founded in 1972) and Omega Window Systems (founded in 1985). From its New Martinsville, West Virginia facility, the company makes replacement and new-construction products for contractors, lumberyards, and distributors, with custom manufacturing and energy-efficient designs among its stated focuses.NEW MARTINSVILLE, WV
Vinyl Kraft Custom Windows and DoorsVinyl Kraft is a southern Ohio window and door manufacturer founded in 1991 after the owners of Cornett Building Supply decided to produce dependable vinyl replacement windows themselves. It has expanded from four employees and 13,500 windows in its first full production year to a regional manufacturer serving contractors, builders, and homeowners across a broad multi-state territory. The company is known for custom vinyl windows and doors, including replacement and new-construction lines.NEW BOSTON, OH