To remove the old rollers, the sliding window must be removed from its frame. This can be done by lifting the window up and out of the track. Once the window is removed, the rollers can be accessed and removed using a screwdriver or a wrench. It is important to keep track of any screws or bolts that are removed during this process, as they will be needed to install the new rollers.

The performance of windows and doors depending on the range of use, but the following aspects are usually considered: strength, which is mainly reflected in the selection of materials for windows and doors, whether it can withstand ultra-high pressure; air tightness, mainly in the structure of windows and doors, whether the inner and outer frames of the windows and doors are tight, and the doors and windows are tight.