Established in 1981, American Thermal Window is a family-owned company that offers a variety of doors and windows. The company provides a range of bay, bow and casement windows. It also offers double-hung, slider, garden and picture windows to its customers. American Thermal Window provides patio, storm and replacement doors in various glass and color options. The company offers colonial, diamond, gold and heritage grids. It additionally provides grooved glass in several patterns, such as Victorian, Marquise and Prairie. American Thermal Window offers decorative glass in Ceylon, Sheffield, Vermillion and Aurora styles. The company provides window and door installation and replacement services. It is a member of the Professional Remodelers Association and the Better Business Bureau. American Thermal Window is located in Chicago.