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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 wear and breakage for a long time. They are sturdy enough to withstand your doors' weight and are easy-to-install. This nylon roller guide for the top is designed to replace bi-fold doors panels that weigh up 30 pounds. It is compatible with System S1000 aluminum profiles. How to identify a broken bifold door roller Bifold doors are a great storage solution for closets however,