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These manual Centre windows are triple-glazed and the hinge is located slightly above centre axis. This window can be matched with the EHV-AT Thermo flashing kit. This quad glazed window comes equipped with a thermal flashing fit, and with a set of XDP insulating collars- breather membrane collar & insulation for linking the window to the roof system and providing insulation around the window as well as the XDS. The airtight flashing is used internally to form a barrier against warm and humid air. This helps to form a barrier between the internal revel of the window and the plasterboard. This innovative window would save energy bills! With a u-value of 0.58 W/m2k this makes it the warmest roof in the market. Easy cleaning of the outer pane and operating the awning blind with the use of blocking sash bolt when sash rotated through 180 degrees FTT windows have wider wooden profiles compared to other windows, this minimizes the appearance of the thermal bridge, making it look neater and providing better insulation for the window. These windows open as a pivot with hinges positioned above the window, allowing a comfortable stand upright position. It is equipped with five seals. As stated above this product comes with a thermal complete flashing kit, when ordering please do confirm the roof covering and roof pitch to allow the correct flashing kits to be supplied. Can choose plain, slate or interlocking tiles up to 90mm, or none (if fitting is part of a combination) – check our range at https://www.buildingmaterials.co.uk/ U8- Quadrupled glazed- passivhaus This is the ultimate glazing choice! Passivhaus-certified U6 glazing offers one of the lowest u-Values on the market, as the heat transmission is extremely low – giving you warmth, saving you money on bills, and considering our carbon footprint! Glass construction from outside to inside = 4H-Tg12Kr-4HT-Tg12Kr-4HT-Tg12Kr-4HT: • 4mm toughened glass outer pane • 12mm warm TGI spacer filled with inert Krypton gas • 4mm centre pane which is toughened with a low emission coating • 12mm Warm TGI spacer filled with inert Krypton gas • 4mm centre pane which is toughened with a low emission coating • 12mm Warm TGI spacer filled with inert Krypton gas, • 4mm toughened glass internal panel This window requires a flashing kit (sold separately) Alternatively, for flashing kit compatibility please see the datasheet. Warranty Information 20 years for the glazing unit 10 years for windows & flashing 2 years for electrically controlled components