Insulated Glass Units (IGUs) are windows made of two or more glass panes separated by a space filled with air or gas, such as argon. This design helps reduce heat transfer, making homes and buildings more energy-efficient. The space between the panes acts as an insulator, minimizing condensation and improving comfort. IGUs are commonly used in residential and commercial buildings. They can be customized with various coatings and tints to enhance performance and aesthetics. By providing better insulation, IGUs contribute to lower energy bills and a more sustainable environment.