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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 breakage and wear for long-term use. They have a high capacity for carrying the weight of your doors and are easy to set up. This nylon roller guide for the top was designed to panels up to 30 pounds. It is compatible with aluminum profiles of System S1000. How do you recognize a broken bifold d