This is a white uPVC double glazedwindow with laminated glazing and has a uValue of 1.2. Please note, this is a non vented window. For vented equivalent please see, PTP-V. PTP is a completely new type of window - a unique product that combines aluminium and PVC construction. It is designed for use in rooms with increased humidity such as bathrooms or kitchens. This window can also be used in rooms where the homeowner wants a white, easy to clean roof window. The PTP window is a centre pivoting roof window, made of multi-chamber PVC-U profiles in white and reinforced with steel. This construction ensures very good stability and protects profiles against warping. The window also uses a new aluminium profile to hold down the glass. The profile matches perfectly with the window's exterior and ensures the product's durability. The window is durable, resists corrosion and weathering, and requires minimum maintenance. The material the window is made of does not absorb any humidity and exhibits a high resistance to acids and alkaloids. PropertiesWindow uValue: 1.2 W/m2K. Glazing uValue: 1.1 W/m2K. Inert gas filled panes: argon. Handle: elegant. Features Modern frame and sash. Innovative hardware. New handle. New tightening system. Seals: PTP roof window has a triple tightening system; clinging seal, border seal and also a seal in the profiles covering the frame sides. Handle: New, white handle located at the bottom part of the sash allows easy operation of the window and also contains a two step ventilation system. Aluminium profiles: Externally the PTP window is covered with aluminium profiles, both sides covered with polyester coating, making them more durable and weather resistant. Trapezium shaped profiles are made of aluminium 1.0 mm thick, which results in higher durability of the aluminium elements, and better resistance to mechanical or transportation damage. Externally the PTP window does not differ visually from wooden windows.