Schweiss Bi-Fold Doors leads the bifold door industry in quality, innovation, design, and price--making us America's top resource for bifold doors with options. Our convenient lift straps, auto latches, and remote control features make our bi fold doors perfect for aircraft hangar doors. Other popular uses include agricultural bi-fold doors, industrial doors, and commercial doors. Schweiss Bi-Fold Doors guarantees the best custom bifold doors on the market. Our site offers assistance with installing bifold doors, upgrading your existing building structure, and helping you find the best bi-fold door for your needs.We invite you to discover why thousands of our customers have found Schweiss to be better than other bifold door manufacturers. Our airport customers recommend Schweiss Bi-Fold Doors as their #1 aircraft hanger door manufacturer!