Folding Patio Doors

Extremely customizable. Ultra-smooth operation. Create absolutely gorgeous views with our ultra-modern and energy efficient bi-folding patio door systems. Built tough in the USA and tested to ensure longevity.


  • Beveled design for attractive look while having multi-chambered vinyl to provide the highest energy efficiency.
  • Multi-point locking handle system to ensure home safety
  • Additional structural integrity from using steel and aluminum reinforcement
  • Fusion welded vinyl corners
  • Quanex Duralite spacer provides the highest level of thermal performance of glass
  • 1" insulated glass unit featuring LoE3 glass (multiple designs available)

Folding Patio Door Configurations

Folding Patio Doors

Terra-Nova Windows bifold patio doors are built in the USA using only the highest quality materials,and assembled by seasoned professionals. The major advantage delivered by a bi-fold door over a patio door is that the they can be fully folded back to open up your home to the world outside.

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