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Bi Fold Repairs - How to Properly Maintain and Repair Your Bi Fold Doors Many bifold doors are difficult to open and might even begin to let in drafts. This is often due to the hardware falling out of alignment over time. It's usually fairly easy to get your bi fold doors back on the right track. It only takes a few adjustments. Misalignment Bi fold doors are gorgeous homes with a variety of benefits, including seamless indoor-outdoor integration, as well as mor