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Bifold Door Roller Replacement These rollers can be used for bifold doors. They are made from stainless steel, and are resistant to breakage and wear for a long time. These rollers are strong enough to withstand your doors' weight and are easy to put in. This top-quality nylon roller guide is designed to be used as a replacement for bi-fold doors weighing up 30 pounds. It is compatible with aluminum profiles from System S1000. How do you identify a damaged bifold door roller