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Bi Fold Repairs - How to Properly Maintain and Repair Your Bi Fold Doors Bi-fold doors can be difficult to open, and some might even allow drafts. The hardware may have become out of alignment over time. Restoring your bi-fold doors in line is typically easy. It's only a matter of a few adjustments. Misalignment Bi-fold doors are a stunning feature for any home. They offer a variety of benefits, including seamless indoor/outdoor integration as well as increased light. However, as with every other feature