Marvin Signature Ultimate Bi Fold Door, In-swing French Door, Double Hung Window, and Double Hung Picture Window

Bi-Fold Doors

What are Bi-Fold Doors?

Bi-fold doors, also called folding doors or accordion doors, have panels that are hinged to each other and fold open and closed like an accordion. Interior folding doors are often made of two panels and are a popular option for closets. Exterior bi-fold doors can be comprised of many large, floor-to-ceiling glass panels. When open, exterior bi-fold doors can create enormous openings, up to 55 feet long.


Bi-fold doors are a great way to take advantage of stunning views and sweeping vistas and strengthen connections to the natural world. Bi-fold doors possess certain unique features compared to other panoramic doors. The panels stack up flat against the edge of an opening and take up less space in the opening than large-paneled sliding doors. Also, a bi-fold door panel can be fitted with a traffic door which is a great option for higher traffic entryways. A traffic door is a conventional swinging door that’s fitted into one of the panels which allows easy passage in and out without having to open the larger panel.

Marvin Bi-Fold Doors

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