Guardian SunGuard SNR 35 coated glass provides a low solar heat gain, a neutral silver appearance and stunning neutral reflectivity. SNR 35 delivers a crisp, reflective look and features a lower solar heat gain coefficient of 0.17 for energy saving performance. By combining the classical, neutral aesthetic both at normal and angular incidence with superior energy performance, SNR 35 presents an attractive exterior architects seek while helping to provide bright, comfortable interiors, say officials.