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Bi Fold Repairs - How to Properly Maintain and Repair Your Bi Fold Doors Many bi fold doors become difficult to open and may even begin to let in drafts. The hardware could have gotten out of place with time. It's usually fairly easy to get your bifold doors back on the right track. It's just a couple of adjustments. Misalignment Bi-fold doors can be a gorgeous addition to any home. They provide a range of advantages such as seamless indoor/outdoor integration as