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Bifold Door Roller Replacement For bifold doors They are constructed from stainless steel, and are resistant to wear and breakage for a long-term use. They are sturdy enough to support your door's weight and are easy to install. This top-quality nylon roller guide is designed for replacement in bi-fold door panels that weigh up 30 pounds. It is compatible with Aluminium System S1000 profiles. How to identify a broken roller on a bifold door Bifold doors are a