Insulated Glass (IG) units are important for all exterior applications, including vertical and sloped glazing, overhead glazing, skylights, and non-vision areas. Depending on the glass type, IG units can provide benefits like light control, solar control, soundproofing, ultraviolet protection, and resistance to hurricanes, earthquakes, blasts, and security threats.

Glass options include clear, low iron, standard, high-performance Low-Es, tinted, reflective, silk-screened, laminated, decorative, and wired glass. The glass lites in an IG unit can be annealed, heat-strengthened, tempered, curved tempered, or laminated.