Search CONTACT US FIND A DEALER TECHNICAL SPECIFICATIONS Products Solutions Inspiration Why Marvin BI-FOLD DOORS MARVIN > DOOR TYPES > BI-FOLD 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 SIGNATURE Ultimate Bi-Fold Door SIGNATURE Coastline Bi-Fold Door Design Options Marvin offers an extensive array of design options to customize your windows and doors to complement your home. VIEW DESIGN OPTIONS Tell Us About Your Project We can help you explore your options by connecting you with a Marvin expert in your area. GET STARTED EXPLORE BI-FOLD DOOR PHOTO GALLERIES DESIGN FOR MANKIND EDITION BRIGHT AND BOLD LIVING ROOM LIGHT AND AIRY RESTAURANT VIEW ALL MARVIN DOORS Marvin experts are experienced in working with architects, builders and homeowners to ensure your vision becomes a reality. FIND A DEALER PRODUCTS Our Collections All Windows All Doors Skylights Spaces SOLUTIONS Coastal Contemporary Historic Design Replacement Well-Being DESIGN & INSPIRATION Product Design Options Photo Gallery Project Gallery Blog WHY MARVIN Our Story Careers Energy Efficiency In The News international TruStile Marvin Replacement (Infinity®) SUPPORT Care and Maintenance Contact Us Glossary of Terms Owner's Manuals Parts Manuals Warranty Information PROFESSIONALS AIA Courses Architectural Resources Drawing and 3D Models Energy Data Technical Specifications Tours and Training FIND A DEALER TELL US ABOUT YOUR PROJECT REQUEST LITERATURE EMAIL SIGN UP Privacy Statement Terms of Use California Users © 2021 Marvin