In conclusion, the difference between EW and EI classifications is the difference between controlled radiation and full thermal insulation. EW glass provides integrity and reduces radiant heat, suitable for controlled applications with safe distance. EI glass provides integrity and robust insulation, essential for life-safe compartments and human proximity. Pyronano’s expertise in both categories empowers specifiers to choose with confidence, ensuring that every fire-resistant glazing application delivers the exact performance required to safeguard lives, property, and comply with the highest building safety standards.