Plastic doors and windows of the glass if broken, how to change it?
Fixed glass, then directly to the pressure out of the glass for it.
If it is a push-pull fan, you should first remove the fan, the pressure of the plastic steel bar with a word screwdriver or flat shovel to get out, with the tape measure the size of the mouth, remember to stay out of the gap. And then knock on the pressure bar, the fan re-installed on it can be.
