Such doors carry more additional decorative load.

The requirements for the interior doors mainly come down to the fact that they should delay drafts and work as an additional sound insulator. It is about increased resistance to knocking out such doors, as a rule, does not come in. Such doors carry more additional decorative load. Well, there are a huge number of options — both the usual swing and sliding, helping to save precious meters, and folding («accordions»), etc.