Large scenery：In comparison with merely half-opening of sliding windows, the slide-folding windows can open the balcony completely and fold all sashes to sides. The completely opened window maximize ventilation area and obtain biggest scenery vision.

The narrow edge：Front width of profiles in the closed position is only 82mm. Fittings are integrated into profiles. Handles are concealed into the gear case. All these designs make the slide-folding door be of conciseness and elegance.

Easy operation：To open the door, you just need to press the gear case cover and pull the door leaf. When you close the door leaf, it will be locked automatically. The meaning of the easy operation is comfort and convenience.

Upper bearing structure：The upper hung mechanism prevent no possibility of digression. Max. single leaf weight is 40kg.

Safety：The inward opening method makes the door very safe, preventing any falling accident.

High drainage performance：Drainage system has been carefully designed with the bottom profile.

Easy stock：As numbers of profiles are very limited, the system is easy for fabricators to have stock. The processing of the door is easy as well because there is no any supplementary profile.

Easy fabrication：The clamping structure design makes no need of any screw for installation of hinges, upper and bottom rollers. It is convenient for installation, adjustment and maintenance, and ensuring the long lifespan.