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The Marvin Signature™ Ultimate Bi-Fold Door opens home to authentic indoor/outdoor living, with panels that fold open and closed like an accordion. So when weather and the seasons don’t lend themselves to an actual ‘open door,’ you can still enjoy a wide-open expanse. With this door, you get it all on a single swinging access door allowing for quick and convenient everyday operation.

Come Fall and early Summer, when it’s time to open up the room and let views and fresh air in, extended widths of up to 55 feet make the Ultimate Bi-Fold Door one of the most extensive folding doors in the industry. Sill options allow you to adapt the door to required performance levels based on environmental exposure. Choose the Performance Sill when the door exists directly to the exterior.

  • For sheltered exposure, a Low Profile sill may be appropriate.
  • For interior applications, select the Floor Channel as a room divider.

Features of the Ultimate Bi-Fold Door

  • Choose from 81 operating configurations
  • Available in heights up to 10 feet or widths up to 55 feet
  • Individual panel sizes available up to 3.5 feet wide by 9.5 feet high
  • Optional single swinging active access door panel allows for convenient everyday use
  • Integrated multi-point hardware system at folding panels for smooth and effortless operation
  • Contemporary hardware for a sleek and simple aesthetic
  • Retractable screen available in widths up to 29.5 feet is nearly invisible when not in use
  • Hidden Lock Status Sensor option connects with your smart home to indicate when door is closed and locked
  • Performance and high-performance sills available, along with a low-profile, flush universal design sill for accessibility
  • Available with IZ3 coastal/hurricane certification
  • Contemporary or Traditional hardware options for design flexibility