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Glazing Performance Comparison

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Note: Performance data calculations in this table are based on the International Glazing Database (IGDB) Version 28.0. Learn more about IGDB.

* Some glass types in this table may not be stocked. Contact ITI Glass for availablity.

  • VLT % - Visible Light Transmittance
  • UV % - Ultra-Violet Transmittance
  • TSE % - Total Solar Energy Transmittance
  • R Vis Out % - Reflected Visible -- Exterior
  • R Vis In % - Reflected Visible Light -- Interior
  • R Out TSE % - Total Solar Energy Reflectance -- Exterior
  • U-Value Winter, Summer - Btu/(hr x sqft x F)
  • U-Value Euro - European U-Value
  • RHG - Relative Heat Gain, Btu/(hr x sqft)
  • SHGC - Solar Heat Gain Coefficient
  • SC - Shading Coefficient
  • LSG - Light to Solar Gain