Can request to choose several sections according to the customer, can open alone among them single or several sections fold to open at the same time, can open with a big area; that is applicable to the veranda, den, garden falls to the ground the place of the door( window). Germany famous brand hardware parts and upper rail and bottom runner design ensure smooth operation. Superior quality seals, waterproof, sound insulation and safe. The special catchments system design, keeps breeze from blow to result in rainwater and dusts enter. Lot Size :None Packing:paper+bubble