architecture - engineering - construction
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Contact 2 and 4 Sided Structural Silicone Curtain Wall
3-Part CSI specifications 
2 and 4 Sided Structural Silicone Curtain Wall
VISIONWALL structural silicone curtain wall is available in either the 3 or 4-element glazing arrangements. The performance ranges used to choose one or the other are:
| 3-Element | 4-Element | |
| Winter Design Temperature of: | Above 0°F | Below 0°F |
| Above -18°C | Below -18°C | |
| *R-Value of: | 2.7 to 4.7 | 4.0 to 7.1 |
| *U-Value of: | 0.37 to 0.21 Btu/hr•ft2•°F | 0.25 to 0.14 Btu/hr•ft2•°F |
| *U-Value of: | 2.10 to 1.21 W/m2•°C | 1.39 to 0.81 W/m2•°C |
| Sound Transmission Class of: | 36 to 44 | 40 to 45 |
* R & U values shown above are for the complete window (glazing unit & frame) and take into the account the impact of edge conditions and frame construction on the window's performance.
08900 - Glazed Curtain Wall
08910 - Metal Framed Curtain Wall
08920 - Glazed Aluminum Curtain Wall System
08 44 00 - Curtain Wall and Glazed Assemblies