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Our aluminium bi-folding doors can open up entire walls offering stunning and near uninterupted views of your outside space. With any combination from two to seven panels, and a maximum width of 7m, we are certain there is a bifold door configuration to suit your home. The advanced insulation properties of thermally broken aluminium mean that our bifold doors are energy efficient, helping to keep your energy bills down whilst being kinder to our planet.
The minimum recommended width for bifold doors is 1400mm (4.7 ft), however, this is the minimum width for a set of bi-folding doors with 2 door panels. To meet the recommended minimum, an individual door panel needs to be no less than 700mm (2.2 ft). Emerald recommends that you don’t opt for anything much smaller than this, or the doors might bind upon closing. Additionally, this might also prevent you from having a usable traffic door. A traffic door is a conventional door that operates independently so you can transition between areas without moving the whole set of bifold doors.
Scroll down to learn more on bifold door configurations, including:

The maximum overall width for a set of bifold doors is 7m. It’s worth noting that the frames should take up approximately 5 to 10cm, so it’s important that you take this into account when calculating the expected width of the doors. Our aluminium frames offer slim, sleek, sightlines whilst being inherently strong and extremely energy efficient. You also have a huge variety of choice when it comes to colours and finishes. Black aluminium bifold doors offer a contemporary, minimalist look, whilst white offers something a little brighter and more traditional.
Bifolds can be manufactured to a minimum height of 1600mm (5.5 ft). Much smaller than this, however, and they’re considered a folding window. Conventional doors are around 2100mm in height so bear in mind that 1600mm is half a metre shorter than this. Otherwise, any taller inhabitants or guests might struggle to get through them!
A set of bi-folding doors is available at a maximum height of 3m. Although, Emerald does not recommend manufacturing a bifold door to both the maximum width and maximum height. This may negatively affect both aesthetics and functionality.
Up to 38 different configurations are available to choose from so we’re confident there is a bifold door solution to suit your home. The number of panels you can have will depend on the size of the aperture. If you’re looking to quickly move between areas of your home, a set of bifolds with 2 panels is not the most convenient. This is because there’s no way of incorporating a traffic door. So, unless you have another door that is convenient to use, opting for 3 panels or more is wise.
In terms of opening, you can choose whether the doors open inwards or outwards. All doors can either fold entirely to the left, or to the right, or they can be split in the middle to fold both left and right.
There are also four different threshold options available to choose from, including ultra-low, to suit a variety of access requirements. Bi-folding doors also have a wide choice of handles, which are available in a number of finishes, so you can customise your doors down to the very last detail.
When choosing bifold doors, the available opening will determine the most suitable size and configuration. The width, height and number of panels required will depend on the space available and how you want the doors to operate.
| Bifold door size | Emerald aluminium bifold doors |
|---|---|
| Minimum width | 1,400 mm |
| Minimum panel width | 700 mm |
| Maximum width | 7,000 mm |
| Minimum height | 1,600 mm |
| Maximum height | 3,000 mm |
| Number of panels available | 2–7 panels |
| Available configurations | Up to 38 |
The smallest bifold door size depends on the available opening and the configuration required. A two-panel bifold door with a minimum width of 1,400 mm is the smallest recommended configuration, with each panel measuring approximately 700 mm wide.
While smaller bifold doors may be possible depending on the system, reducing the panel width too far can affect how the doors operate. The panel size, number of panels and intended use should all be considered when choosing the right configuration.
Here at Emerald Windows, we install low maintenance, ultra-durable aluminium bifold doors. When purchasing a set from us, we’ll carefully work with you to learn all your requirements and ideas. From here, we can advise you on they should open, the number of panels and whether to go for narrow leaves or wide. Interested in a set for your home? Give us a call on 0800 612 4154 or contact us online.
The minimum recommended width for bifold doors is 1,400 mm. This size allows for a two-panel bifold door configuration, with each individual panel measuring approximately 700 mm wide.
The smallest recommended bifold door size depends on the available opening and the configuration required. A width of 1,400 mm is the minimum recommended size for a practical two-panel bifold door setup.
Unlike traditional doors, bifold doors do not have one fixed standard width. They are usually designed to suit the available opening, with the number of panels adjusted depending on the required size and configuration.
A bifold door panel should generally be around 700 mm wide or more. Panel width can affect how the doors operate, as very narrow panels may become less practical to use.
The number of bifold door panels depends on the width of the opening and the chosen configuration. Bifold doors can be made with different panel combinations, with Emerald aluminium bifold doors available from two to seven panels.
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