Extra-large glass panels in modern buildings are often made of tempered glass for strength and durability. This type of glass is much stronger than regular glass, allowing for lighter structures and reduced CO2 emissions. Heat-strengthened glass is about 1.6 times stronger, while fully tempered glass is about 2.7 times stronger than regular glass. This means thinner glass and slimmer metal frames can be used in high-quality facade projects, shaping the urban landscape in a more sustainable way.