Aluminum windows are simple and beautiful, with large window width, large glass block, wide field of view, high lighting rate, convenient glass cleaning, flexible use, safe and reliable, long service life, open in a plane, take up less space, and facilitate the installation of screens. At present, aluminum windows are the most widely used. Disadvantages: two windows cannot be opened at the same time, at most only half open, the ventilation is relatively poor; sometimes the sealing is also slightly worse. Sliding window: divided into left and right, up and down. Aluminum windows have the advantage of not occupying indoor space, beautiful appearance, economical price, and good sealing.
Adopt high-grade slide rail, gently push to open flexibly. Coupled with large pieces of glass, it not only increases the lighting in the room, but also improves the overall shape of the building. Aluminum windows are in good condition and are not easily damaged, but the ventilation area is limited. Inner flat open under-hanging under-hung windows This is a window style of aluminum alloy and plastic-steel windows that appeared later. It is a new form developed on the basis of casement windows. It has two opening methods, which can be opened horizontally or pulled away from the upper part. When the casement window is closed, pulling the upper part of the window inwards can open a gap of about ten centimeters. Because the fixed hinge is located at the lower part of the window, it is called the under-hanging type. Its advantages are: it can be ventilated and burglar-proof, preventing rainwater from drifting into the house when the window is opened, which guarantees safety and realizes indoor ventilation. Because of the hinge, the window can only open a ten-centimeter gap and cannot be reached from the outside. It is especially suitable for use when there is no one in the house.