Newly certified Manufacturers Certification criteria

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KF 410 P

Certified since Feb. 26, 2024
Climate zone Cool, temperate
Type Operable
Efficiency Class phB
Material PVC
UW 0.80 W/(m2K)
Open type Inward opening


PVC frame with blown in EPS insulation EPS (0.038 W/(mK)) and XPS insulation (0.032 W/(mK)); maximum window dimensions are 1.4 x 2.0 m; window is offered not just in white Pane thickness: 48 mm (4/18/4/18/4), rebate depth: mm. Spacer: SWISSPACER Ultimate with butyl as secondary seal.

The window is also offered with an aluminium outer shell. With that the window does not reach the criteria.

Name Frame width U-Value Ψ-Value Frsi-Value
Mullion 1 casement 150 mm 0.84 W/(m²K) 0.022 W/(mK) 0.726
Mullion 2 casements 187 mm 0.85 W/(m²K) 0.022 W/(mK) 0.738
Bottom 113 mm 0.85 W/(m²K) 0.022 W/(mK) 0.739
Top 113 mm 0.85 W/(m²K) 0.022 W/(mK) 0.739
Lateral 113 mm 0.85 W/(m²K) 0.022 W/(mK) 0.739
Unit D, Carlisle Road
NW9 0HN London
United Kingdom

U-Value Calculation

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