Folding doors—also known as bi-fold or accordion doors—are popular for creating wide openings, maximizing indoor–outdoor connections, and saving space. Whether used in living rooms, patios, kitchens, stores, or offices, choosing the right size is essential to ensure smooth operation and a clean, modern look.
This guide covers standard folding door dimensions, panel width options, height variations, and custom-size solutions for residential and commercial applications.
What Is a Folding Door?
A folding door consists of multiple hinged panels that fold and slide to one or both sides. Depending on design, it may include:
- 2–8 panels or more
- Inward or outward opening
- Aluminum, wood, or UPVC frames
- Top-hung or bottom-rolling systems
Because panels fold like an accordion, sizes depend heavily on the number of panels and the opening width.
Standard Folding Door Sizes
While sizes vary across regions and manufacturers, the following dimensions are widely used for aluminum folding doors in residential and light commercial projects.
Standard Height
- 2100 mm (82″) – most common interior/exterior height
- 2400 mm (96″) – premium houses, large openings
- 2700–3000 mm (106″–118″) – high-end villas or commercial storefronts
Standard Width (Total Opening)
Typical opening widths include:
- 1800 mm (70″)
- 2400 mm (94″)
- 3000 mm (118″)
- 3600 mm (142″)
- 4200 mm (165″)
- 4800 mm (189″)
- 6000 mm (236″) and above for commercial/restaurant spaces
Standard Panel Width
Most folding door panels fall within:
- 600–900 mm (24″–36″) per panel
This range ensures comfortable folding motion and structural strength.
If you’d like to learn more about standard door dimensions, please refer to this detailed guide: https://cnwindowsdoors.com/standard-door-dimensions-a-complete-guide/
Common Folding Door Configurations
| Configuration | Number of Panels | Typical Opening Width | Best Use Cases |
| 2-Panel Folding Door | 2 panels | 1200–1800 mm (47″–70″) | Small balconies, laundry areas, compact rooms |
| 3-Panel Folding Door | 3 panels | 1800–2700 mm (70″–106″) | Medium openings, kitchens, study rooms |
| 4-Panel Folding Door | 4 panels | 2400–3600 mm (94″–142″) | Living rooms, patios, main entrances |
| 5-Panel Folding Door | 5 panels | 3000–4200 mm (118″–165″) | Wide openings, villas, larger living spaces |
| 6-Panel Folding Door | 6 panels | 3600–4800 mm (142″–189″) | Large patio openings, luxury homes |
| 8+ Panels (Commercial) | 8–12 panels | 4800–8000 mm+ (189″–315″+) | Restaurants, shops, resorts, event spaces |
Custom Folding Door Sizes
For homes and commercial buildings with unique architectural openings, custom manufacturing is often the best solution.
Advantages of Custom Sizes
- Fits non-standard existing openings
- Allows extra-wide or extra-tall doors
- Offers flexible panel width selection
- Supports special configurations (e.g., with a traffic door)
- Better appearance and energy performance
Custom aluminum folding doors are especially popular in villas, resorts, restaurants, and modern office spaces.
Conclusion
Selecting the right folding door size ensures stability, smooth operation, and a beautiful opening effect. Standard options suit most homes, but custom sizes offer greater flexibility—especially for modern architecture or large open-plan areas.
If you need standard or custom folding door dimensions, professional advice, or design support, feel free to contact us anytime at wang@gddlsn.com.