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How to Replace Bifold Doors Many home improvement stores offer bifold doors in kits, which include the door panels as well as the installation track. The kit should be about one inch smaller than the frame opening. If your bifold doors squeak open, it could be because of a an issue with the guide pin that is loose on the top of the sliding track or the floor pin at the bottom is out of the way or not in place. These problems can be fixed quickly and cheaply. Cost Bifold doors can transform any home wit