Many apartments (residential areas) are the most frequently constructed locations, with veranda folding doors built in the middle of the veranda and living room. This is because you can use both the advantages of expansion and non-extension options. The apartment, which is the new construction site, was already living on the veranda extension work. The expanded living room space satisfies the space, but it is difficult to maintain the room temperature with only one shot, especially in summer and winter, with a lot of heating and cooling costs, the folding door was constructed with double windows along with the veranda shotsi.

On a very hot and cold day, we opened a folding door to block the outside temperature by double and maintain the indoor temperature.

It was carried out in a two-way way with a black frame, and the glass was more insulated with 16t double-layer glass, and the green + transparent glass color to make the exterior of the window look more fresh and refreshing.

The folding door is not installed only for the purpose of expansion and separation of space, but also for the insulation, soundproofing, windproofing, etc.