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Bifold Door Roller Replacement Suitable for bifold doors These rollers are constructed of stainless steel and resist break and wear for long-term use. These rollers are strong enough to support your doors' weight and are easy to install. is made to be used in bi-fold door panels weighing up 30 pounds. It can be used with System S1000 aluminum profiles. How to identify the broken roller on the bifold door Bifold doors