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Bifold Door Roller Replacement These rollers are suitable for bifold doors. They are made from stainless steel, and they resist wear and breakage for long-term usage. They have a high load-bearing capacity to support the door's weight, and are simple to put in. This top-quality nylon roller guide is designed to be used in bi-fold door panels that weigh up 30 pounds. It fits aluminum profiles of System S1000. How do you identify the broken roller on the bifold door Bifold doo