A folding door has been installed inside the central library of the university as the entrance to the lounge. We divided it into two places and carried out construction with transparent + transparent 16t double-glazed with 4 + 6 pairs total of 10 pairs. It is a place where many students and outside visitors can chat or relax. Many people visit there, so there can be a lot of pollution. It's a black frame that's strong against living pollution, so you can use a neat folding door like the first one even if you use it for a long time.

It can be opened and closed by applying both one-sided and two-way driving methods. You can separate the space by closing the folding door and use the space in the lounge independently. Also, you can open the folding door to expand the space and use it as a wide open space.

Also, the space of the library, which can be bland with the exterior of the folding door, is more luxurious and sophisticated, and it has an interior effect.