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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. They have a large capacity for carrying the weight of your doors and are simple to put in. This top-quality nylon roller guide is designed for replacement in bi-fold door panels that weigh up 30 pounds. It can be used with aluminum profiles of System S1000. How to identify a damaged bifold door roller Bifold doors are ideal for saving space in closets. However