Curtain fixed and movable glass slat wall Project X-TU is an apartment complex of the French architect Nicolas Desmazieres and Anouk Legendre (also known as X-TU) in the Paris suburb of Nanterre, on an elongated axis of the Office and La Defense in the Northwest of the main city high-rise district. It cannot be overlooked that the architects have focused visually on the nearby Prefecture of the Department Haute-de-Seine. It was built in the 1970s by Andre Wogenscky, a long-time employee of Le Corbusier. The completion of X-TU took place in the year 2012. On an elongated base, where offices and shops located nine blocks – rise five to the South, and four on the north side – with up to ten storeys. To ensure a sufficient sun protection on the South side, the building here was given a curtain, equipped with fixed and movable slats of glass facade from the Shadoglass system Colt international. This glass skin acts like a network of horizontal segments that offer a varied picture of delicate shades of gray by their different printing. The four towers on the north side are low and have a different facade.

Over 4000 glass louvres were installed the complex of the X-TU is 105 metres long and up to 33 metres high. The entire area encompasses about 16,000 m. In addition to the offices, shops and an art gallery on the ground floor, the building includes 164 apartments or apartments in the towers with one to three rooms, kitchen and bathroom. There are small gardens, and green spaces on the terraces and floor levels, loosen up the overall picture and mitigate the massiveness of the complex between the individual towers. Behind the facade of glass louvers on the South side are Loggias and porticos, the apartments are accessed.