| 摘要 |
The garage door has side rollers at top and bottom. The bottom rollers in vertical guide rails extending for the door height, and the top ones in horizontal rails. The top rollers (14) are at a lower level than the door top edge (15), while the two top rails (7) accommodating them each have a section (9) sloping downwards to their level, and joining onto a top horizontal one (8) at the level of the door top edge or higher. USE/ADVANTAGE - Garage door swings outwards for min. amount, and requires min. space inside garage.
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