In places where many cars enter and exit, such as car centers, repair shops, and tire centers, the folding door lower rail must be constructed as a car center-only lower rail.

The lower rail of the general folding door is exposed above the floor surface to accept the heavy weight, which increases the incidence of A/S due to the large weight and impact of the vehicle. So unlike the regular folding door, it's different with the lower rail for the car center
Designed for less damage and wear, the upper runner is designed to run smoothly.It minimizes the protruding area above the floor, enables smooth driving without interruption when passing the vehicle, and minimizes the incidence of A/S by distributing the weight.​

It is possible to open and close the door by folding it sideways rather than up and down, and it is not opaque but transparent window, so there is less frustration when working with a wide view. In addition, you can open and close the door whenever you need it, so that you are not harmed by external environmental conditions. It has a good soundproof effect due to its high airtightness and airtightness, so it prevents external noise from entering the interior, and does not cause damage to nearby stores because the internal noise issued during work does not count to the outside.

Through a wide entrance door, indoor air can also be circulated outside quickly to keep the air inside the car wash comfortably.