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Bifold Door Roller Replacement These rollers are ideal for bifold doors. They are made from stainless steel, and are resistant to wear and breakage for a long time. They are sturdy enough to withstand your doors' weight and are easy to put in. This nylon roller guide for the top was designed to replace bi-fold door panels that weigh up to 30 pounds. It can be used with aluminum profiles from System S1000. How to identify a damaged bifold door roller Bifold doors can be an excellent solution to s