Solarban 80 Optiblue glass from PPG
Solarban 80 Optiblue glass, PPG ppg.com Two coating options give a light, steel-blue-green color with a 34 percent visible light transmittance (VLT) and a light-to-solar-gain (LSG) ratio of 1.70, or a darker steel-blue color with a VLT of 25 percent and an LSG of 1.23 - Solar heat-gain coefficient of 0.20 0.23 shading coefficient 0.27 to 0.29 U-value