APW 431 is a PVC sliding door with triple insulating glazing and Low-E coating and was developed in Japan. The easy operation of the sash is the focal point of this concept and is supported by two main functions:
1. Unique Operating Handle
Pressing lightly downwards with the handle in the unlocked position, a special mechanism pushes the sash away from the side profiles and facilitates sliding of the sash.
2. Tilting Bogie Wheel
When locking, the sliding sash is pressed to the front and into the