The 1200mm x 1200mm VELUX CVU 0225U INTEGRA Triple Glazed Flat Roof Window Base floods your home with natural light and brightens up the darkest of spaces. This window base has an elegant glass-to-edge design with flat and straight lines that sit flawlessly on your roof. The new generation of VELUX glass rooflights features 52% more natural daylight, reduced height, a new state of the art design that makes this range sit flush with your roof, discreet black corner keys for a smoother finish and new installation screws and prepared for craning. The hidden rain sensor within the VELUX INTEGRA flat roof rooflight is an innovative addition that helps ensure the rooflight is always closed during bad weather, even when you’re not in. This means the building can be left empty, but the rooflight is still open to provide ventilation. As soon as the sensor detects rain, it will automatically close, protecting your home from the elements. This base creates a stunning finish with an invisible sash and slim frame whilst providing your home with as much daylight as possible, even when a blind is installed. The moulded polyurethane frame around a plywood core creates a slim finish, reducing a bulky and unattractive appearance. VELUX high-performance insulation is integrated into the frame to give the best possible protection against heat loss. This, combined with VELUX's optimised protection against thermal bridges, delivers a warmer, more comfortable home. Please note a polycarbonate top cover is required for use with this product to create a completely flat roof window system. This frame is suitable for use with all VELUX ISU top covers. This frame is ideal for roof pitches between 0-15°. VELUX provide a 10-year guarantee on roof windows and a 5-year guarantee on electrics. Features & Benefits Built-in rain sensor Brilliant sound reduction Slim design for maximum daylight Suitable for pitches between 0-15° Compatible with all VELUX ISU top covers Protects against heat loss Prevents thermal bridges Creates a bright home 10-year guarantee