Due to the nature of the folding door, which is a folding door, the doors are divided into several. They often ask if outside temperature, noise, and wind will flow through the door.
But that worry is only for a while.

Both the sides between the door and the door are excellent in airtightness and airtightness with rubber gasket finish. As a result, outside temperature, noise, and wind are blocked. The rubber gasket can also prevent injuries to hand traffic accidents that can occur due to momentary carelessness.​

The folding degree of a home is not as wide as that of an office or event hall, so the preference for a biased development method is higher than that of a two-way development method.