The New Style BI-FOLD BD3
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| UPPER ROLLER | HANDLE PROFILE | BOTTOM ROLLER |
| The upper roller is the simple design and easy to open and closed. | The handle is match perfectly with the frame design.It’s easy to open and close,even kids can used it.The door will open/closed. | Increase the smoothness and silence the door while slipping on the aluminium. |
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| ADJUST NUT |
