The TLP U4 is a centre-pivot roof window with a PVC frame and sash protected externally by aluminium cladding. The multi-chamber PVC profiles are reinforced internally with galvanised steel sections, which increase their structural rigidity.
Uw = 1.1 W/(m²·K) – heat transfer coefficient of the complete window*
Ug = 0.7 W/(m²·K) – heat transfer coefficient of the glazing unit

Glazed unit U4