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Bifold Door Roller Replacement These rollers can be used for bifold doors. They are made from stainless steel, and are resistant to breaking and wear for long-term usage. These rollers are strong enough to support your doors' weight and are easy-to-install. This nylon roller guide for the top is designed to replace bi-fold doors panels that weigh up to 30 pounds. It fits aluminum profiles from System S1000. How to identify the broken roller on the bifold door Bifold doors can be an excellent s