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Bifold Door Roller Replacement Suitable for bifold doors, these rollers are made from stainless steel and resist wear and breakage for a long-term use. They have a high capacity for carrying the weight of your doors, and are easy to install. This top nylon roller guide was designed to be used in bi-fold door panels that weigh up 30 pounds. It fits aluminum profiles from System S1000. How do you identify a damaged bifold door roller Bifold doors can be a great solution for sa