Solarban® z50 Glass is a soothing, neutral, steel blue-gray glass comprised of Solarban® 60 solar control low-e coating on Optiblue® glass. Solarban® z50 glass brings a distinctly different aesthetic to the Solarban® family, along with minimal exterior reflectance, superb solar control and high levels of visible light transmittance (VLT). Solarban® z50 glass consists of Solarban® 60 solar control, low-e coating on Optiblue® tinted glass with clear glass as the inboard lite.