BUILD WITH LIGHT PERFORMANCE COMPARISON TABLES. Table of Contents

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1 PERFORMANCE COMPARISON TABLES Table of Contents Energy Terms page 1 SuperNeutral, SNX & SNR on clear & UltraWhite.. page 2 SuperNeutral, SNX & SNR on gray tinted glass... page 3 SuperNeutral, SNX & SNR on green tinted glass.. page 4 AG 43, AG 50 & Royal Blue page 5 Neutral 40, Neutral 50, Neutral page 6 Neutral 78/65 & Light Blue page 6 Silver 32 & Silver page 7 SunGuard IS page 8 BUILD WITH LIGHT

2 EXPLANATION OF NFRC 2010 STANDARD TERMS Visible Light = radiant energy in the wavelength range of 380 nm to 780 nm with Ill. D65 and CIE 2 observer. % Transmittance = percentage of visible light at normal incidence (90 to surface) directly transmitted through the glass. % Reflectance Indoors = percentage of visible light at normal incidence directly reflected from the glass back indoors. % Reflectance Outdoors = percentage of visible light at normal incidence directly reflected from the glass back outdoors. Shading Coefficient (SC) = fraction of solar heat, direct (300 to 2500 nm) plus indirect (5 to 40 μm), transferred indoors through the glass. For reference, 1/8 (3.1 mm) clear glass has a value of 1.00 (SC is an older term being replaced by the SHGC). Solar Heat Gain Coefficient (SHGC) = fraction of solar energy incident on the glazing that is transferred indoors both directly and indirectly through the glazing. The direct gain portion equals the direct solar transmittance, while the indirect is the fraction of the solar energy absorbed to the energy reradiated & convected indoors. No heat gain from warmer outdoor air is included. SHGC = (Direct Solar Trans) + {[(Indirect Solar Heat Gain) - (Summer U- Value)(89.6 F F)] / ( Btu/hr.ft²)}. U-Value (also called U-Factor) = air-to-air thermal conductance of 39 high glazing and associated air films. Units are Btu/hr.ft².F. Winter-night = 12.3 mph wind at -0.4 F & 69.8 F indoors. Summer = 0 sun, 6.15 mph wind at 89.6 F & 75.2 F still indoor air. Light-to-Solar Gain (LSG) = the ratio of the Visible Light Transmittance to the Solar Heat Gain Coefficient. The LSG is used to determine if the glazing is spectrally selective. Tvis/SHGC=LSG. on Clear & UltraWhite Page 1

3 SUPERNEUTRAL SERIES PERFORMANCE COMPARISON Page 2

4 SUPERNEUTRAL SERIES PERFORMANCE COMPARISON on CrystalGray and Gray

5 SUPERNEUTRAL SERIES PERFORMANCE COMPARISON on TwilightGreen and Green Page 3 All coatings on the #2 surface unless otherwise noted. The Guardian SunGuard performance values shown are nominal and subject to manufacturing tolerances. Performance data are calculated in accordance with the LBNL Window 6.3 computer analysis using an air mass of 1.5. Guardian reserves the right to change product performance characteristics without notice or obligation. Performance data from other glass companies are based on available public information. Products shown are not exact visual matches. Glass samples should be obtained to determine similarity of products in appearance. Solarban, Optiblue, Atlantica and Solexia are trademarks of PPG Corp. Viracon supplies high performance architectural glass coatings on a variety of float glass substrates. Viracon fabricates glass products using Guardian float glass such as clear float, UltraWhite low-iron, green float, TwilightGreen and CrystalGray float glass. CrystalGray, UltraWhite and TwilightGreen are trademarks of Guardian Industries Corp. HIGH PERFORMANCE SERIES PERFORMANCE COMPARISON on Clear, UltraWhite, CrystalGray, Green Page 4

6 All coatings on the #2 surface unless otherwise noted. The Guardian SunGuard performance values shown are nominal and subject to manufacturing tolerances. Performance data are calculated in accordance with the LBNL Window 6.3 computer analysis using an air mass of 1.5. Guardian reserves the right to change product performance characteristics without notice or obligation. Performance data from other glass companies are based on available public information. Products shown are not exact visual matches. Glass samples should be obtained to determine similarity of products in appearance. Viracon supplies high performance architectural glass coatings on a variety of float glass substrates. Viracon fabricates glass products using Guardian float glass such as clear float, UltraWhite low-iron, green float, TwilightGreen and CrystalGray float glass. CrystalGray, UltraWhite and TwilightGreen are trademarks of Guardian Industries Corp. Solarban is a trademark of PPG Corp. Solarscreen is a trademark of Viracon. Page 5

7 HIGH PERFORMANCE SERIES PERFORMANCE COMPARISON on Clear, UltraWhite, CrystalGray, Green 1" Insulating Units Performance Data - 6mm / 12mm air / 6mm - coating on #2 surface Manufacturer Product Substrate Guardian Transmittance % Visible Light Reflectance Out % In % Shading Coefficient Solar Heat Gain Coefficient U-Value Winter SunGuard Neutral 78/65 (#3) Clear/Clear SunGuard Neutral 78/65 SunGuard Light Blue 63 SunGuard Neutral 61 SunGuard Neutral 50 SunGuard Neutral 40 SunGuard Neutral 78/65 (#3) SunGuard Light Blue 63 SunGuard Neutral 61 SunGuard Neutral 50 SunGuard Neutral 40 Light to Solar Gain (LSG) PPG Sungate 500 Clear/Clear Solarban 60 Starphire/Starphire Sungate 500 (#3) Atlantica / Clear Solarban z50 Optiblue/Clear Solarban R100 Clear/Clear Viracon Guardian Guardian VE1-85 Clear/Clear Solarscreen VE1- Solarscreen VE1- SunGuard Light Blue 63 CrystalGray/Clear SunGuard Neutral 50 SunGuard Neutral SunGuard Light Blue 63 SunGuard Neutral 50 SunGuard Neutral PPG Solarban 60 Atlantica / Clear Solarban 60 Azuria / Clear Vistcool (#2) /Sungate 500 (#3) Atlantica / Clear Solarban R100 Solexia/Clear Viracon VE2-85 Green/Clear Solarscreen VE2- Solarscreen VE2- Page 6

8 All coatings on the #2 surface unless otherwise noted. The Guardian SunGuard performance values shown are nominal and subject to manufacturing tolerances. Performance data are calculated in accordance with the LBNL Window 6.3 computer analysis using an air mass of 1.5. Guardian reserves the right to change product performance characteristics without notice or obligation. Performance data from other glass companies are based on available public information. Products shown are not exact visual matches. Glass samples should be obtained to determine similarity of products in appearance. Solarban is a trademark of PPG Corp. Solarscreen is a trademark of Viracon. SOLAR SERIES PERFORMANCE COMPARISON on Clear, UltraWhite, Green 1" Insulating Units Performance Data - 6mm / 12mm air / 6mm - coating on #2 surface Manufacturer Product Substrate Transmittance % Visible Light Reflectance Out % In % Shading Coefficient Solar Heat Gain Coefficient U-Value Winter Light to Solar Gain (LSG) Guardian SunGuard Silver 32 Clear/Clear SunGuard Silver 20 Clear/Clear SunGuard Silver 32 UltraWhite/UltraWhite SunGuard Silver 20 UltraWhite/UltraWhite Viracon Solarscreen VS1-20 Clear/Clear Solarscreen VY1-20 Clear/Clear Guardian SunGuard Silver 32 Green/Clear SunGuard Silver 20 Green/Clear PPG Solarcool Azuria/Clear Viracon Solarscreen VS2-20 Green/Clear Solarscreen VY2-20 Green/Clear All coatings on the #2 surface unless otherwise noted. The Guardian SunGuard performance values shown are nominal and subject to manufacturing tolerances. Performance data are calculated in accordance with the LBNL Window 6.3 computer analysis using an air mass of 1.5. Guardian reserves the right to change product performance characteristics without notice or obligation. Performance data from other glass companies are based on available public information. Products shown are not exact visual matches. Glass samples should be obtained to determine similarity of products in appearance. Solarban is a trademark of PPG Corp. Solarscreen is a trademark of Viracon. Page 7

9 1" Insulating Units Performance Data - 6mm / 12mm air / 6mm Manufacturer Product Substrate Guardian SUPERNEUTRAL SERIES with IS 20 PERFORMANCE on Clear, Green, TwilightGreen and CrystalGray Transmittance % Solar U-Value Heat Gain Winter Reflectance Shading Coefficient Out % In % Coefficient Air Argon Visible Light Light to Solar Gain (LSG) SNX 62/27 Clear/Clear SNX 62/27 + IS 20 Clear/Clear SNX 51/23 Clear/Clear SNX 51/23 + IS 20 Clear/Clear SN 68 Clear/Clear SN 68 + IS 20 Clear/Clear SN 62 Clear/Clear SN 62 + IS 20 Clear/Clear SN 54 Clear/Clear SN 54 + IS 20 Clear/Clear SNR 43 Clear/Clear SNR 43 + IS 20 Clear/Clear Guardian SNX 62/27 Green/Clear SNX 62/27 + IS 20 Green/Clear SNX 51/23 Green/Clear SNX 51/23 + IS 20 Green/Clear SN 68 Green/Clear SN 68 + IS 20 Green/Clear SN 54 Green/Clear SN 54 + IS 20 Green/Clear SNR 43 Green/Clear SNR 43 + IS 20 Green/Clear Guardian SNX 62/27 TwilightGreen/Clear SNX 62/27 + IS 20 TwilightGreen/Clear SNX 51/23 TwilightGreen/Clear SNX 51/23 + IS 20 TwilightGreen/Clear SN 68 TwilightGreen/Clear SN 68 + IS 20 TwilightGreen/Clear SN 54 TwilightGreen/Clear SN 54 + IS 20 TwilightGreen/Clear SNR 43 TwilightGreen/Clear SNR 43 + IS 20 TwilightGreen/Clear Page 8

10 Guardian SNX 62/27 CrystalGray/Clear SNX 62/27 + IS 20 CrystalGray/Clear SNX 51/23 CrystalGray/Clear SNX 51/23 + IS 20 CrystalGray/Clear SN 68 CrystalGray/Clear SN 68 + IS 20 CrystalGray/Clear SN 62 CrystalGray/Clear SN 62 + IS 20 CrystalGray/Clear SN 54 CrystalGray/Clear SN 54 + IS 20 CrystalGray/Clear SNR 43 CrystalGray/Clear SNR 43 + IS 20 CrystalGray/Clear All primary SunGuard coatings are on the #2 surface, SunGuard IS 20 coating is on the #4 surface. The Guardian SunGuard performance values shown are nominal and subject to manufacturing tolerances. Performance data are calculated in accordance with the LBNL Window 6.3 computer analysis using an air mass of 1.5. Guardian reserves the right to change product performance characteristics without notice or obligation. CrystalGray, UltraWhite and TwilightGreen are trademarks of Guardian Industries Corp. Page 9