All folding doors are opened to separate the space between the veranda and the living room, so you can live according to the veranda and living room composition.​

As the most sunny veranda, there are sometimes people who worry that the frame paint where it is exposed to sunlight will be faded or peeled off. The durability of the frame color, discoloration, and peeling are minimized because the frame is painted with fluorine paint rather than with the powder painting method. The incidence of paint A/S in the frame is significantly lower even after prolonged use.

The difference between a typical basic folding door frame and an apartment (residential) folding door frame is different on the lower rail. The base folding door lower rail is raised above the floor surface by approximately 3 cm outside the protrusion. It can be uncomfortable in an apartment (residential) where people live without shoes.

If there is foot trap in the lower rail for not wearing shoes while passing by, it can cause serious injury, and it can also be difficult to move a large object to a place near the veranda. Considering that, the apartment-type folding door lower rail was designed as a slim type lower rail so that the area protruding above the floor surface was exposed to about 15cm or 5cm.

The minimal exposed lower rail significantly reduces the discomfort of foot trap.