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A8.2 Unlabeled Vertical Fenestration
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Unlabeled vertical fenestration, both operable and fixed, shall be assigned the U-factors, SHGCs, and VTs in Table A8.2.
Table A8.2 Assembly U-Factors, Assembly SHGCs, and Assembly Visible Transmittances (VTs) for Unlabeled Vertical Fenestration
| Frame Type | Glazing Type | Unlabeled Vertical Fenestration | |||||
|---|---|---|---|---|---|---|---|
| Clear Glass | Tinted Glass | ||||||
| U-Factor | SHGC | VT | U-Factor | SHGC | VT | ||
| All frame types | Single glazing | 1.25 | 0.82 | 0.76 | 1.25 | 0.70 | 0.58 |
| Glass block | 0.60 | 0.56 | 0.56 | NA | NA | NA | |
| Wood, vinyl, or fiberglass frames | Double glazing | 0.60 | 0.59 | 0.64 | 0.60 | 0.42 | 0.39 |
| Triple glazing | 0.45 | 0.52 | 0.57 | 0.45 | 0.34 | 0.21 | |
| Metal and other frame types | Double glazing | 0.90 | 0.68 | 0.66 | 0.90 | 0.50 | 0.40 |
| Triple glazing | 0.70 | 0.60 | 0.59 | 0.70 | 0.42 | 0.22 | |
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