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Bifold Door Roller Replacement Ideal for bifold doors These rollers are constructed of stainless steel and resist wear and breakage for long-term use. They have a high load-bearing capacity to support the weight of your doors, and are simple to put in. This top nylon roller guide was designed to be used in bi-fold doors weighing up 30 pounds. It is compatible with aluminum profiles of System S1000. How do you identify the broken roller on a bifold door Bifold doors are a fantastic space-saving soluti