Windows & Doors customized I believe that through Shao, we will have a further understanding and understanding of aluminum alloy doors. Of course, there are many markets for aluminum alloy door products, and the quality is not balanced. Many people tend to fall into some misunderstandings when choosing aluminum alloy doors. Then aluminum alloy doors and windows What are the purchasing skills? Let's take a look at the following introduction: Misunderstanding skills for system door and window purchase: 1. System door and window shopping error: 1. Heavy and beautiful: Only value the diversity of colors and ignore the inner quality. The double-layer insulating glass and triple-layer laminated glass used are much better than ordinary glass. The thickness of the oxide film should reach 10 microns, and you can gently scratch the surface of the glass profile to see if the oxide film on the surface can be erased. If it can be erased, that's good. 2. Heavy thickness: You only need to choose the ones that meet the requirements of our country’s relevant laws and regulations. The wall thickness of the aluminum profiles for doors and windows should be no less than 1.2 mm. The thickness of the doors and windows for the system design is from 0. install replacement window in rough opening aluminium windows with wooden frame how to join windows together how much do stacking doors cost?