The Benefits of Energy Efficient Windows
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SolarZone™ Insulated Glass Package
Thermal Performance Comparison*
Clear Glass Double-Hung
- U-Value: 0.46 SHGC: 0.59
Clear Glass Sliding
- U-Value: 0.45 SHGC: 0.59
SolarZone Double-Hung
- U-Value: 0.29 SHGC: 0.3
SolarZone Sliding
- U-Value: 0.28 SHGC: 0.3
SolarZone ThermD Elite Double-Hung
- U-Value: 0.27 SHGC: 0.21
SolarZone ThermD Elite Sliding
- U-Value: 0.27 SHGC: 0.21
SolarZone ThermD iE Double-Hung
- U-Value: 0.27 SHGC: 0.3
SolarZone ThermD iE Sliding
- U-Value: 0.27 SHGC: 0.3
*Whole window values are based on double-strength glass, standard 4000 Series offering with composite reinforcements. ST and HP performance values are also available.
Air/Water/Structural Results Window World 4000
- Air/cfm – 0.4
- Water/psf – 6.0
- Structural – DP40