W4900
| Certified since | Sept. 13, 2017 |
| Climate zone | Cool, temperate |
| Type | Operable |
| Sub type | |
| Efficiency class | phC |
| Material | Aluminium |
| UW | 0.78 W/(m2K) |
| Open type | Inward opening |
Description
Aluminium-windowframe with insulation of Kooltherm Q3 (0.021 W/(mK)) and polyethylene-foam (0.038 W/(mK)) inside the rebate. Pane thickness: 48 mm (4/18/4/18/4), rebate depth: 14 mm, spacer: SWISSPACER Ultimate
| Name | Frame width | U-value | Ψ-value | Frsi-value |
|---|---|---|---|---|
| Flying Mullion | 149 mm | 0.91 W/(m²K) | 0.028 W/(mK) | 0.756 |
| Bottom | 175 mm | 0.76 W/(m²K) | 0.025 W/(mK) | 0.749 |
| Head | 175 mm | 0.76 W/(m²K) | 0.025 W/(mK) | 0.749 |
| Jamb | 175 mm | 0.76 W/(m²K) | 0.025 W/(mK) | 0.749 |






