First, push the window upwards to its limit and pull it outwards. Next, use a screwdriver to loosen the screws in the aluminum alloy track, then push the security shutters to the edge. Then, use a flathead screwdriver to pry open and remove the outer window door; you can try removing one small one first. Alternatively, lift both window doors upwards together, loosen the screws, separate the lower track, and remove the window door.
Aluminum alloy: An alloy based on aluminum with added amounts of other alloying elements; it is a lightweight metal material. In addition to the general properties of aluminum, aluminum alloys also possess specific alloy characteristics due to variations in the types and amounts of added alloying elements. Aluminum alloys have a density of 2.63–2.85 g/cm³, high strength (σb = 110–650 MPa), a specific strength close to that of high alloy steel, and a specific stiffness exceeding that of steel. They also possess good casting and plastic processing properties, good electrical and thermal conductivity, good corrosion resistance and weldability, and can be used as structural materials. They have wide applications in aerospace, aviation, transportation, construction, electromechanical, light chemical, and daily necessities.
