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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 some might even allow drafts. The hardware may have become out of alignment over time. Getting your bi-fold doors back in line is usually pretty easy. All you need is a few minor adjustments. Misalignment Bi-fold doors can be a gorgeous addition to any home. They provide a range of benefits that include seamless indoor/outdoor integration aswell in a greater amount of lighti