It is not difficult to guess why the thresholds between the rooms are used. They solve many problems. The thresholds do not allow a fairly large amount of dust, noise, smoke or other smells to the room, and you just have to close the door as a room with the help of thresholds becomes protected from all these hardships, but the thresholds have one significant problem. Everyone always stumbles about them, and sometimes it can even get a serious leg injury if you get gazed and not replace the threshold. Often, guests who go from room to room, without even suspecting the danger under the feet, become victims. In addition, such thresholds become a big problem when older people or children live in an apartment or house, so most often they are removed, but the problem described above appears.
It is worth noting that recently, automatic thresholds for interior doors have begun to appear on our domestic wounds, which solve both problems at once. The essence of their work is that after the doors open, the thresholds simply fall automatically to the level of the floor and do not interfere with people to go through. As soon as the doors closed the thresholds, rise to the appropriate level. It would seem that such an innovation and installation of automatic thresholds is quite expensive, but this is not so. In addition, when installing automatic thresholds, you can not be afraid that you have to constantly change details or wooden products, since the material is quite durable and even after many years will look like during the purchase. Automatically thresholds, also consist of material that does not burn and does not miss small caustic particles, so in case of fire, fire and smoke will not penetrate the next room, and this already guarantees a kind of safety.