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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 are sturdy enough to support your doors' weight and are easy to put in. 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 recognize the broken bifold door roller Bifold doors are an excellent s