| 摘要 |
An enclosure of a shower stall or bathtub alcove which includes a frame and a door or doors. The frame is composed of upper and lower housings spaced by side jambs. The housings have single tracks. There is at least one door which is composed of double window panels connected by vertical hinges and handle panels at either end of each door, also connected by vertical hinges. The vertical hinges allow the door to fold. The door is supported within the frame and the panels are allowed to slide along the upper and lower tracks by trolleys at either extremity of the vertical hinges connecting double window panels and the vertical hinges connecting the handle panels to the double window panels.
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