I don’t know if you noticed the two holes on the top of the door when you bought it. Some customers may have seen it, or they may have ignored it. Some customers think that this hole is left over from production. as shown below:

In fact, this hole is called “vent hole” in the industry. Yes, its function is the same as its name, for ventilation, to prevent excessive pressure inside the door, causing problems such as door bulging and deformation. This is also a way to extend the service life of interior doors.

If you have other questions or needs about interior doors, please contact Shengyifa.