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Bifold Door Roller Replacement These rollers can be used for bifold doors. They are made from stainless steel, and resist breakage and wear for a long time. They have a large capacity for carrying the weight of your doors, and are simple to put in. This top nylon roller guide is designed to be used in bi-fold door panels that weigh up to 30 pounds. It can be used with Aluminium System S1000 profiles. How do you recognize a damaged bifold door roller Bifold doors