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Bifold Door Roller Replacement These rollers are suitable for bifold doors. They are made of stainless steel, and are resistant to breakage and wear for a long time. They have a strong capacity for carrying the weight of your doors, and are easy to install. This nylon roller guide for the top was designed to replace bifold doors panels up to 30 pounds. It can be used with aluminum profiles from System S1000. How do you identify the broken roller on the bifold door Bifold doors are an excellent storage sol