SunGuard® SuperNeutral®

SN 68

Photo credit: Robert R Gigliotti/RRGPhotography.com

Natural light, neutral color

Build bright, airy spaces, earn LEED® credits and reduce operating costs. With SunGuard® SuperNeutral® 68, it’s all possible. This glass lets in high amounts of natural light while preventing the heat that usually comes with it. SuperNeutral 68 transmits the most light and has the most neutral appearance of any SunGuard product. It can also be laminated to deliver sound reduction, security, safety and hurricane protection.

Helps achieve LEED® credits

Saves energy, helping to achieve certification

Bright light

68% high light transmission

Lowers air conditioning costs

38% solar heat gain

Available on 6 float glass options

Clear, UltraClear® low-iron, grey, CrystalGray®, green and TwilightGreen®

Product Information

Applications

  • Facades
  • Windows
  • Doors
  • Curtain Walls
  • Roofs
  • Skylights

Manufacturing Options

  • Tempered
  • Laminated
  • Heat Soaked
  • Heat Strengthened
  • Annealed

Visual Appearance

Use the glass visualizer to get an introductory understanding of how glass will appear in use. Use the Glass Analytics tools to explore even more options for color and performance.

Visual Appearance

Use the glass visualizer to get an introductory understanding of how glass will appear in use. Use the Glass Analytics tools to explore even more options for color and performance.

* Please see Color Disclaimer at the bottom of the page for additional information.

Performance Data

  • TRANSMITTANCE

    1. Visible Light 71%
    2. Ultraviolet 40%
    3. Solar Energy 37%
    4. Light to Solar Gain (LSG) 1.80
  • Reflectance

    1. Visible Light Outside 11%
    2. Visible Light Inside 13%
    3. Solar Energy Outside 43%
  • U-VALUE

    1. Winter Nighttime - Argon(90%) 0.25
    2. Winter Nighttime - Air 0.29
    3. Summer Daytime - Air 0.28
  • Heat Gain

    1. Relative Heat Gain (RHG) 94
    2. Solar Heat Gain Coefficient (SHGC) 0.39
  • Composition

    1. IG 6 mm/12.7 mm/6 mm - Coating on surface #2
    2. Outboard lite SunGuard SN 68 on UltraClear
    3. Inboard lite Guardian UltraClear
    4. Calculation Standard NFRC-2010
  • TRANSMITTANCE

    1. Visible Light 68%
    2. Ultraviolet 30%
    3. Solar Energy 33%
    4. Light to Solar Gain (LSG) 1.80
  • Reflectance

    1. Visible Light Outside 11%
    2. Visible Light Inside 12%
    3. Solar Energy Outside 33%
  • U-VALUE

    1. Winter Nighttime - Argon(90%) 0.25
    2. Winter Nighttime - Air 0.29
    3. Summer Daytime - Air 0.28
  • Heat Gain

    1. Relative Heat Gain (RHG) 90
    2. Solar Heat Gain Coefficient (SHGC) 0.38
  • Composition

    1. IG 6 mm/12.7 mm/6 mm - Coating on surface #2
    2. Outboard lite SunGuard SN 68 on Clear
    3. Inboard lite Guardian Float Clear
    4. Calculation Standard NFRC-2010
  • TRANSMITTANCE

    1. Visible Light 44%
    2. Ultraviolet 19%
    3. Solar Energy 23%
    4. Light to Solar Gain (LSG) 1.51
  • Reflectance

    1. Visible Light Outside 7%
    2. Visible Light Inside 11%
    3. Solar Energy Outside 21%
  • U-VALUE

    1. Winter Nighttime - Argon(90%) 0.25
    2. Winter Nighttime - Air 0.29
    3. Summer Daytime - Air 0.28
  • Heat Gain

    1. Relative Heat Gain (RHG) 70
    2. Solar Heat Gain Coefficient (SHGC) 0.29
  • Composition

    1. IG 6 mm/12.7 mm/6 mm - Coating on surface #2
    2. Outboard lite SunGuard SN 68 on CrystalBlue
    3. Inboard lite Guardian Float Clear
    4. Calculation Standard NFRC-2010
  • TRANSMITTANCE

    1. Visible Light 48%
    2. Ultraviolet 17%
    3. Solar Energy 23%
    4. Light to Solar Gain (LSG) 1.64
  • Reflectance

    1. Visible Light Outside 8%
    2. Visible Light Inside 11%
    3. Solar Energy Outside 16%
  • U-VALUE

    1. Winter Nighttime - Argon(90%) 0.25
    2. Winter Nighttime - Air 0.29
    3. Summer Daytime - Air 0.28
  • Heat Gain

    1. Relative Heat Gain (RHG) 71
    2. Solar Heat Gain Coefficient (SHGC) 0.30
  • Composition

    1. IG 6 mm/12.7 mm/6 mm - Coating on surface #2
    2. Outboard lite SunGuard SN 68 on CrystalGray
    3. Inboard lite Guardian Float Clear
    4. Calculation Standard NFRC-2010
  • TRANSMITTANCE

    1. Visible Light 34%
    2. Ultraviolet 13%
    3. Solar Energy 18%
    4. Light to Solar Gain (LSG) 1.37
  • Reflectance

    1. Visible Light Outside 6%
    2. Visible Light Inside 11%
    3. Solar Energy Outside 16%
  • U-VALUE

    1. Winter Nighttime - Argon(90%) 0.25
    2. Winter Nighttime - Air 0.29
    3. Summer Daytime - Air 0.27
  • Heat Gain

    1. Relative Heat Gain (RHG) 61
    2. Solar Heat Gain Coefficient (SHGC) 0.25
  • Composition

    1. IG 6 mm/12.7 mm/6 mm - Coating on surface #2
    2. Outboard lite SunGuard SN 68 on Gray
    3. Inboard lite Guardian Float Clear
    4. Calculation Standard NFRC-2010
  • TRANSMITTANCE

    1. Visible Light 57%
    2. Ultraviolet 13%
    3. Solar Energy 23%
    4. Light to Solar Gain (LSG) 1.92
  • Reflectance

    1. Visible Light Outside 9%
    2. Visible Light Inside 12%
    3. Solar Energy Outside 9%
  • U-VALUE

    1. Winter Nighttime - Argon(90%) 0.25
    2. Winter Nighttime - Air 0.29
    3. Summer Daytime - Air 0.28
  • Heat Gain

    1. Relative Heat Gain (RHG) 72
    2. Solar Heat Gain Coefficient (SHGC) 0.30
  • Composition

    1. IG 6 mm/12.7 mm/6 mm - Coating on surface #2
    2. Outboard lite SunGuard SN 68 on Green
    3. Inboard lite Guardian Float Clear
    4. Calculation Standard NFRC-2010

Displayed colors are intended to represent actual color. Color is a function of light and reflectivity and cannot be accurately portrayed online. Actual glass samples should be used to determine color. Please order a sample and discuss color with your Guardian Architectural Design Manager to ensure you are pleased with your SunGuard selection before ordering glass for your project.

The thermal stress guideline is only a rough guide to the thermal safety of a glazing. Other factors such as large glass areas, shapes and patterns, thick glass, glass damaged during shipping, handling or installation, orientation of the building, exterior shading, overhangs/fins that reduce wind speed, and areas with high daily temperature fluctuations can all increase the probability of thermal breakage. The results shown are not for any specific glazing installation and do not constitute a warranty against glass breakage.