Thermal insulation Excellent Quality Double aluminum top hung window

◪1. Ventilation: The room naturally circulates with the natural air, the indoor air is fresh, and the ability of rainwater to enter the room is eliminated. The fresh air undoubtedly creates comfort for people to live in.
◪2.Safety: The interlocking hardware and handles arranged around the window sash are used for various functions in the indoor operation. When closing, the window sash is fixed on the window frame, so the safety and anti-theft performance are excellent.
◪3. Practicality: avoiding the opening of the inner window to occupy the indoor space.
◪4.Good Sealing and heat preservation: Through the multi-point locking around the window sash, the sealing of the door and window is ensured, and the heat preservation effect is good.

◪1. Whether the glass installation is flat and firm, there should be no dust and water vapor in the inter layer of the insulating glass.
◪2.Use a magnet to check whether there is a reinforced steel in the window, or to observe the frame of the door and window (door and window decoration effect diagram), whether there is a screw for fastening the steel on the fan, and whether it is equipped with a reinforced steel.
◪3.The surface of the upper suspension window should be glossy, smooth and flat. Check for open weld breaks at the time of purchase. There is no gap between the sash and the frame. The seal has no curling, grooving and pungent smell.
◪4.Most of the upper hanging windows are broken on the track. In the exhibition hall, the finished door should be repeatedly slid to the left and right. The good track should be slid to have a certain weight, but there is no noise at all.