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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 a draft. This is often because the hardware is falling out of alignment with time. The process of getting your bi-fold doors back in line is generally easy. All you need is a few adjustments. Misalignment Bi-fold doors are a stunning feature for any home. They offer a variety of advantages, including seamless i