1. It is possible to replace the door leaf without changing the frame, but only if the bending structure of the door frame is the same as that of the manufacturer who customized the security door, the locking points and side locking points of the lock are the same or smaller than those of the existing door frame, and the hinge part must be the same, otherwise it cannot be replaced. This requires that it is best to choose the door of the same manufacturer or the same manufacturer in the same area as the original anti-theft door, and the other party must be asked to make a door-to-door measurement.

2. Even if the size measurement is accurate, it is difficult to ensure that there is no error, because the automation of this kind of products is low, and some small errors are allowed in the production process, so it is possible that after installing a new door leaf, the gap between the original anti-theft door fan and the door frame is large, and it is difficult to ensure a good anti-theft function. Of course, if you don't mind the gap, it's ok.

3. Warranty is a problem. If the same manufacturer promises a perfect warranty, don't worry, but if the frame and the fan are different manufacturers, I don't think you will get a satisfactory promise.