Unified Window Systems is a home improvement firm with showrooms in Hempstead, White Plains, Patchogue and Huntington. The firm specializes in window, door, roofing, siding and awning installation. In addition to windows and doors, Unified Window Systems builds car ports, insulates attics and performs stone work. Unified's website contains information on how to take advantage of available tax credits and rebates, directions to any of the company's four showrooms and more.