https://aiwins.wiki/wiki/10_Fa....cts_About_Repair_Bif
Bifold Door Roller Replacement Suitable for bifold doors, these rollers are made from stainless steel, and are resistant to break and wear for long-term use. These rollers are strong enough to support your door's weight and are easy to install. This nylon roller guide for the top was designed to replace bifold doors panels that weigh up 30 pounds. It is compatible with aluminum profiles from System S1000. How do you recognize a broken bifold door roller Bifold doors are a g