... dB6. Condensation defense: dew point is below -65 °C Glass specification6mm toughened self cleaning outer, 16mm spacer argon gas ... glazing unit comprises two or more sheets of glass that are separated with aluminum spacer fully filled ... by float clear glass, tinted glass, solar reflective glass, Low E glass, laminated glass, tempered glass, heat-strengthened glass and curved glass, etc according to ...