Advantages: large light area with even light distribution; top can use reflective glass for softer light without shadows. Long service life over 15 years with high strength from hot-dip galvanized steel frame. Strong corrosion resistance and flame retardancy. High transmittance that does not decline over time, unlike polycarbonate which yellows. Disadvantages: high initial investment and greater energy consumption in cold regions due to higher heat transfer. Glass is fragile and can break from impact or thermal stress.