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Bifold Door Roller Replacement For bifold doors They are constructed from stainless steel and resist break and wear for long-term use. These rollers are strong enough to support your door's weight and are easy to install. This top nylon roller guide is made to be used in bi-fold door panels that weigh up to 30 pounds. It can be used with aluminum profiles of System S1000. How to identify a broken bifold door roller Bifold doors can be a great solution for saving space in closets. However, they may cause problem