Bifold doors, also understood as moving folding doors have actually generally been used in interior areas. These doors are often referred to as zig-zag doors. If an odd number of panels are used a single one can be configured as a normal swing door. Bifold doors have much higher versatility than sliding patio doors or French doors. Their flexibility in configuration and availability in various materials make Bifold doors a tempting alternative for anyone thinking about installing or updating a standard patio door.

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