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One of the first questions people ask when they start looking at bifold doors is how many panels they actually need. It is a practical question, but the answer depends on more than just the width of your opening.
This blog covers the what the standard panel options available, how to choose the right configuration for your home, and what to consider before you commit.
Bifold doors typically come in configurations ranging from two panels up to seven or more. The most common options for residential properties are two, three, four, and six panel sets.
That said, the number of panels is not something you pick in isolation. It is determined by your opening width, how you want the doors to stack, and which direction you need them to open.
A two panel bifold door works well for narrower openings, typically up to around 1.8 metres wide. Each panel folds against the other, stacking neatly to one side.
They are a clean, simple option and suit utility rooms, internal openings, and smaller garden access points well. Because there are fewer panels, the sight lines are wider and the view through the glass is less interrupted.
Three panels suit openings roughly between 1.8 and 2.7 metres. With an odd number of panels, you have more flexibility in how the doors stack. Two panels can fold to one side while one sits on the other, or all three can stack to a single side depending on the configuration you choose.
In practice, this is one of the more versatile options for standard sized rear extensions and kitchen openings.
Four panels is one of the most popular choices for residential bifold doors in the UK. It works well for openings between 2.4 and 3.6 metres and gives a good balance between panel width and the amount of clear opening you get when the doors are folded back.
With four panels, you can split them two and two, folding to opposite ends of the opening. This works particularly well when you want to keep a central clear view and stack symmetrically.
Larger openings, typically those between 3.5 and 5 metres or more, tend to suit five or six panel configurations. Six panel sets are common for wide kitchen extensions and open plan living spaces where maximising the connection between inside and outside is the priority.
With six panels, a three and three split is a popular choice. It creates a central meeting point and stacks evenly on both sides, leaving the full width of the opening clear when the doors are fully open.
It is possible to go beyond six panels, and both Origin and Smarts can accommodate larger configurations for wider openings. Seven or eight panel sets are more common on commercial projects or larger residential builds, though we do install them for homeowners with particularly wide openings.
At this scale, the structural considerations become more significant, particularly around the supporting lintel and how the weight of the doors is managed.
As a general guide, individual bifold door panels work best between around 600mm and 1000mm wide. Going narrower than this can make the panels feel flimsy. Going wider starts to make the folded stack bulkier and heavier to operate.
So for a 4 metre opening, four panels at around 1000mm each is a reasonable starting point. For a 3 metre opening, three panels at 1000mm or four at 750mm both work depending on what you want.
What we find in practice is that people sometimes assume more panels means a better result, but that is not always the case. Fewer, wider panels often give a cleaner look and a more substantial feel to the door.
Whatever panel count you choose, you also need to decide which direction the doors fold and whether you want a traffic door included.
A traffic door is a single panel within the set that opens independently like a regular door, without having to fold the whole set back. For bifold doors that lead to a garden, this is worth considering if you want day to day access without fully opening the doors.
Both Origin and Smarts offer traffic door options across their bifold door ranges, and it is something we always discuss with customers during the quoting process.
The honest answer is that it depends on your opening, your budget, and how you plan to use the space. There is no single configuration that suits every project.
What helps is seeing the options in person. At our Cheltenham showroom in Gloucestershire, we have working examples of different bifold door configurations from both Origin and Smarts on display. You can see how the panels fold, check the stack width, and get a feel for the hardware before you make a decision.
Tailored and free quote form <–
Every bifold door we supply and install is priced based on your specific opening, panel count, colour, and glass specification. We do not work from fixed price lists because no two installations are the same.
The quickest way to get a figure is to use our online quote tool. If you would prefer to talk through the options first, you are welcome to visit the showroom or get in touch directly.
