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Bifold Door Roller Replacement These rollers are suitable for bifold doors. They are made from stainless steel, and resist breaking and wear for long-term use. They are sturdy enough to support your doors' weight and are easy to install. This nylon roller guide for the top is designed to replace bifold doors panels that weigh up 30 pounds. It fits System S1000 aluminium profiles. How do you identify the broken bifold door roller Bifold doors are an excellent storage solution for closets but like anythin