A homeowner’s guide to standard and bespoke bifold door sizes
Bifold door sizes: It’s something that can put homeowners off from investing in their dream home improvement project. Many people assume the expansive bifold door sets seen online are simply too large for a typical property.
If you’re feeling unsure about whether bifold doors can realistically work in your home, you’re not alone. In reality, this concern is usually not true at all.
At Associated Windows, our aluminium bifold doors are completely bespoke, so they can fit any opening. With setups ranging from three to 12 doors, our bifolds have the capability to breathe new life (and light) into any home, whether you’re in a period home in Henleaze, a semi-detached in Southville, or a contemporary city apartment.
This complete guide explains typical bifold door heights and widths, popular configurations, what to consider when measuring for installation, and how bespoke sizing works. It’s designed to support homeowners in the early research stage and help you feel confident before choosing new bifold doors.
Typical bifold door heights and widths
When it comes to bifold doors, there is no one-size-fits-all answer. However, there are standard bifold door sizes that homeowners commonly choose because they suit most properties and openings.
Most external bifold doors are designed to balance appearance, performance, and practicality, while still offering plenty of flexibility through bespoke manufacturing.
Commonly seen bifold door sizes include:
- Door height: most standard bifold doors start at around 2,100mm
- Average standard height: typically between 2,100mm and 2,400mm
- Maximum bespoke height: up to 2,876mm with Origin systems
- Door panel widths: from 325mm to 1,200mm per panel
- Overall widths: achieved by increasing the number of panels rather than oversized leaves
While these are popular sizes, all of our bifold doors are made to measure. This means we can accommodate unusual openings, non standard sizes, grande systems, extensions, or renovations where a standard door size simply won’t work.
Popular configurations for bifold doors
Bifold door configurations describe how many door panels are used and how they fold and stack. Choosing the right configuration affects everyday access, furniture placement, and how open your space feels.
Below are some of the most popular options we install across Bristol homes.
2 door (2+0)
A practical solution for smaller openings. Both panels fold to one side, making this configuration ideal for compact patios or replacing an old door with a modern external bifold door.
3 door (3+0)
All three panels fold neatly in the same direction. This option provides a wide opening and can include an everyday access door.
3 door (2+1)
One leaf operates as a single access door, while the remaining two panels fold back. This is a popular choice for homeowners who want flexibility without opening the full system every time.
4 door (3+1)
A highly versatile layout that combines a hinged access door with folding panels. It’s a great option for family homes that use the garden daily.
4 door (4+0)
All four panels fold to one side for a fully open wall effect. This configuration is perfect for entertaining and maximising outdoor connection.
4 door (1+1 with fixed side panels)
A central access door is paired with fixed glazed panels. This adds architectural interest while maintaining strong thermal performance.
5 door (3+2)
Panels fold to both sides of the opening. This balanced look works well in wider openings and large extensions.
6 door (3+3)
One of the most flexible bifold door configurations. Doors can fold back symmetrically, operate as internal French doors, or open fully for large gatherings.
6 door (6+0)
All panels stack to one side. This is ideal when you want to completely open up one end of a room.
7 door configurations
Seven-panel systems such as 3+4, 6+1, or 2+5 are ideal for expansive openings, providing exceptional views and flexible access options.
Every configuration we supply is custom-sized to your opening, ensuring the right size, smooth operation, and a perfect fit.
What to consider when measuring for installation
Measuring for bifold doors involves more than checking width and height. Structure, thresholds, and door operation all play a role in achieving a smooth, long-lasting installation.
Key factors to consider include:
- uneven brickwork and structural openings
- fitting tolerance for smooth folding action
- threshold types and floor levels
- opening direction and stacking space
- support above the opening
This is why we always recommend professional measuring. At Associated Windows, we can visit your home to measure accurately and advise on the best door system for your space, ensuring complete peace of mind.
Bi-fold doors from Associated Windows
We supply and install premium aluminium bifold doors from Origin, one of the UK’s leading bifold door manufacturers. As an Origin Premium Partner, we offer their full bifold door range, all made in the UK and backed by long guarantees.
Our bifold doors combine slim sight lines, durable aluminium frames, smooth operation, and excellent energy efficiency.
OB-49 slimline bifold doors
The OB-49 is ideal if you want a modern look with minimal visible frame.
Key features include:
- 49mm slim sightlines for maximum natural light
- door panels up to 1,200mm wide
- heights up to 2,876mm
- thermally broken aluminium frames
- high-performance double glazing
OB-72 bifold doors
The OB-72 is designed for strength and performance, making it ideal for larger openings or more exposed locations.
Benefits include:
- robust aluminium profiles
- suitability for wide spans
- excellent weather resistance
- advanced multi-point locking
Soho collection bifold doors
The Soho collection offers a steel-inspired aesthetic using aluminium, making it ideal for contemporary homes or character renovations that want slim profiles with modern performance.
Colours and glazing options
Origin bifold doors are available in over 150 RAL colours, including matt, satin, textured, and dual-colour finishes. High-performance double glazing comes as standard, helping regulate indoor temperatures and reduce energy bills.
Frequently asked questions
How many panels should a bifold door have?
The number of panels depends on the width of your opening and how you plan to use the doors day to day. Smaller openings often suit two to four panels, while wider spaces benefit from six or more for smoother operation and balanced folding.
Can bifold doors be made to a custom size?
Yes. All Origin bifold doors we supply are fully bespoke. Heights, widths, panel numbers, colours, glazing, and thresholds can all be tailored to suit your home and opening.
Do bifold doors improve energy efficiency?
Modern aluminium bifold doors use thermal breaks and double glazing to reduce heat loss. According to the Energy Saving Trust, upgrading to high-performance glazing can reduce household heat loss by up to 30 percent, helping keep homes comfortable year-round.
Who are Associated Windows?
We are a Bristol-based window and door installer supplying and fitting high-quality aluminium and uPVC windows, doors, and rooflights across Bristol and the surrounding areas. From period properties in Henleaze to modern apartments in the city centre, we take a bespoke approach to every home.
Why homeowners choose Associated Windows:
- friendly, experienced team with no hard-sell approach
- Which? Trusted Trader, FENSA, accredited
- Origin Premium Partner with up to a 20-year guarantee on Origin products
- transparent pricing with free, no-obligation quotes
You’re always welcome to visit our showroom at 32–34 Gloucester Road North, Bristol, BS7 0SJ, just off the M5. Here, you can explore our bifold door range, see colour options up close, and speak with our knowledgeable team.
