Have you ever bought something online only to find it’s not quite the size you expected? Then, returns, extra cost, headaches, and whatnot? You don’t want to face that with Bifold doors, right?
That’s why we have come up with this guide. It will share the standard bifold door sizes in inches, millimeters, and feet. Plus, we will share how to measure the bifold door size as well. Continue reading to learn all of this and much more.
Understanding Bifold Door Sizes
Bifold doors come in different sizes. The most common widths are 18″, 20″, 24″, 28″, 30″, 32″, and 36″. Standard heights are usually 80″ or 96″. These sizes work for different spaces, including small closets, room dividers, pantry doors, patios, or elsewhere. Here are some lovely folding patio doors if you want them for your patio.
When understanding Bifold door sizes, you will hear two prevalent terms: Nominal and actual size. Understanding the difference between these two terms is essential before purchasing Bifold doors. Otherwise, you might get a door of the wrong size. Let’s check these out.
- What is a Nominal Size? Nominal size is the rounded measurement of a door manufacturers use for standardization. For example, a bifold door labeled 36 inches wide might not be exactly 36 inches wide. It’s just a rounded number used to group similar-sized doors.
- What is the Actual Size? The actual size is the precise measurement of the door. It is generally smaller than the nominal size. The extra space is left for fitting tolerance.
Here is an example to help you understand the difference. Imagine a bifold door labeled 36″ x 80″. In reality, it might measure around 35½” x 79″. The slight difference gives extra space for hinges, tracks, and a smooth installation.
Why is This Important?
Following are some of the reasons that will help you understand why understanding this difference is so important.
- Saves Your Money: Buying by nominal size alone can result in a door that won’t fit. This can lead to returns, extra costs, and headaches. Spending additional time on accurate measurements can save you from all these problems.
- No more frustrating gaps: Get the actual size right so you don’t end up with ugly spaces that ruin the look of the entire design. Poorly sized doors can also let in dust, noise, and drafts. It can make your space less comfortable.
- Easy to use doors: Knowing the size means your bifold doors will open and close without a fight. A well-fitted door moves smoothly on its track. It reduces the wear and tear and keeps it functional for a long time.
- Accurate sizing makes installation easy: It allows you to prep your space perfectly and prevents last-minute tweaks. It also ensures that hardware like hinges and tracks align properly without alignment issues.
- Keep your project on track: It helps you complete installation quickly without extra stress. With the correct measurements, you can avoid delays and move on to the next phase of your project without frustration.
Standard Bifold Door Sizes
Bifold doors come in various standard sizes to accommodate different room layouts. Here’s a look at some of the most common bifold door sizes available in the market:
Standard Heights:
- 80 inches (6 ft 8 in): The most common bifold door height for residential homes.
- 96 inches (8 ft): This height is ideal for larger spaces or homes with high ceilings.
2-panel Bifold door sizes standard Widths
Two-panel bifold doors are commonly used for closets and small spaces. Standard sizes include:
- 24 inches (2 ft): It is best for small Bifold Closet door sizes.
- 30 inches (2.5 ft): it is suitable for medium-sized closet openings.
- 36 inches (3 ft): A standard choice for most homes. Read this article to understand standard closet sizes.
- 48 inches (4 ft): This height is for larger closet openings.
You can learn more about closet dimensions from here.
4-panel Bifold door sizes Standard Widths
4-panel bifold doors are used for large spaces. These doors provide a beautiful view and are generally used for connecting indoor and outdoor spaces. Below are the standard width sizes for these doors.
- 48 inches (4 ft)
- 60 inches (5 ft)
- 72 inches (6 ft)
The standard sizes are usually the same but may vary depending on the country you live in. The UK and Australia are two such countries. Let’s examine them.
Standard Sizes Of Bifold Doors In The UK
Bifold door sizes are usually determined in the United Kingdom based on metric measurements. Here are the most common dimensions:
Standard Heights:
- 2,078mm (6.8 ft): Common for internal bifold doors.
- 2,090mm (6.10 ft): Common for external bifold doors.
Standard Widths
The standard width of a bi-fold door in the UK depends on whether you want interior or exterior doors. Below, we will examine both in detail.
Standard Widths for Internal Bifold Doors
- 1,200mm (1.2m / 4 ft) (It is the smallest bifold door size in standard options.)
- 1,500mm (1.5m / 5 ft)
- 1,800mm (1.8m / 6 ft)
- 2,100mm (2.1m / 7 ft)
- 2,400mm (2.4m / 8 ft)
Standard Widths for External Bifold Doors
- 1,800mm (1.8m / 6 ft)
- 2,100mm (2.1m / 7 ft)
- 2,400mm (2.4m / 8 ft)
- 3,000mm (3m / 10 ft)
Note: External bifold doors are often taller than internal ones to accommodate door frames and insulation.
Standard Bifold Door Sizes In Australia
In Australia, bifold door size is also measured in millimeters. Standard Bifold door Dimensions in mm are as follows:
Standard Heights:
- 2,100mm (6.9 ft): Common for internal bifold doors.
- 2,400mm (7.8 ft): Used for external bifold doors.
Standard Widths:
- 1,500mm (5 ft)
- 1,800mm (6 ft)
- 2,400mm (8 ft)
- 3,000mm (10 ft)
Australian homes often prefer wider bifold doors, especially for patio and garden spaces.
How to Measure a Bifold Door Size?
Before getting into how to measure, let me tell you an essential thing. You need to be very precise in your measurements if you don’t want to regret later. If you neglect, you will probably end up in tears with wasted money and time.
Always check the manufacturer’s instructions before buying or installing the door. Sometimes, they provide the exact measurements and special steps needed for a proper fit. Now, let’s see how to measure the size of a bifold door.
Measuring Width
All right, so the first thing we need to figure out is how wide the space for your door is. It is also called “aperture” in some places.
Now, to make sure we get it right, we’re going to measure the width in three different areas: the top of the doorway, the middle, and then the bottom. Deduct approximately ½ inches from the total width for clearance and smooth operation.
Measuring Height
Measure the height from the floor to the top of the opening at three points: left, center, and right. Use the smallest measurement to account for uneven flooring or framing. Deduct around ½ inch for clearance, especially if installing a track.
Checking Depth
Ensure enough space for the bifold door panels to fold and stack properly when opened. Most bifold doors require at least 1.5 to 3 inches of depth.
That’s how you measure the size. The method is the same whether you measure the size of the bifold closet door or any other.
How Many Door Panels Can I Have In My Bifold Door?
One of the most asked questions while measuring bifold doors is how many panels I can add to it. Well, it’s not that simple. Several factors affect it. These include:
- The first and most important factor is the width of the opening. The larger the width, the more panels you will need.
- Secondly, the height of the door also plays a role. A tall door needs an extra frame to support the amount of glass, so you may need to add one or more panels.
- Panel thickness also affects the number of panels you can add. Most modern glazed bifold doors are around 35mm thick. If each panel is 35mm and you have six, the total folded width will be at least 210mm.
- You should also consider the recessed space that holds the lead door and the panels behind it.
- The door placement, whether external or internal, also affects the number of panels. External bifold doors may require more panels than internal ones, as internal doors usually have smaller openings.
- External doors welcome outside light and showcase active gardens, patios, or decking features. The glass panels are the best, and the view is better. Add If security and privacy are not a concern, add more panels.
Can Bifold Doors Be Made-To-Measure?
Yes, bifold doors can be made to measure. Custom-made bifold doors are an excellent option if your space doesn’t match standard sizes. They provide the perfect fit for non-standard openings.
These are customizable but more expensive than the in-stock options. We have shared a detailed comparison of both options to help you understand.
Standard Vs. Custom Bifold Doors
Below is a table showing the detailed difference between standard and custom doors.
| Feature | Standard Bifold Doors | Custom Bifold Doors |
| Availability | Easily available in predefined sizes | Made-to-order takes time to production |
| Size Options | Common widths: 18″, 20″, 24″, 28″, 30″, 32″, 36″Common heights: 80″, 96″ | Any size to fit non-standard openings |
| Cost | More affordable | More expensive due to customization |
| Installation | Easier to install if the opening matches the standard size | Requires precise measurements and professional installation in some cases |
| Customization | Limited styles, materials, and colors | Wide range of materials, styles, colors, and panel configurations |
| Fit & Efficiency | It may leave gaps if the opening isn’t standard, leading to noise, drafts, and lower energy efficiency | Snug fit ensures better insulation, security, and noise reduction |
| Functionality | Fixed number of panels and configurations | Custom panel arrangements, folding options, and hinge placements |
| Structural Changes | It may require modifying doorways to fit | There is no need for modifications; it is designed to fit perfectly |
| Lead Time | Available immediately | Requires manufacturing time before delivery |
| Aesthetic Appeal | Limited designs may not match unique decor | It can be tailored to enhance home aesthetics and value |
Want to know where to buy both of these doors? Here are the top 10 bifold door manufacturers in the USA. These manufacturers provide you with all kinds of doors, from small Bifold Closet door sizes to large outdoor sizes.
The Best Bifold Door Material According to Sizes
Choosing the right material for bifold doors depends on size, location (interior or exterior), budget, and other needs.
For Small to Medium Interior Bifold Doors (24″-72″ wide, 80″-96″ tall)
- Solid Wood: Durable and stylish but expensive and heavy.
- MDF (Medium-Density Fiberboard): Affordable and smooth for painting but less durable.
- Aluminum: Lightweight, moisture-resistant, and modern but less insulating.
For Large Interior and Exterior Bifold Doors (72″-192″ wide, 80″-120″ tall)
- Aluminum-Clad Wood: Combines wood’s beauty with aluminum’s durability but is costly.
- uPVC: Budget-friendly, low maintenance, and insulated but less durable.
- Aluminum: Strong, weather-resistant, and sleek but needs thermal breaks for insulation.
- Glass (Framed or Frameless): Maximizes light and views but requires sturdy and heavier frames.
If you are looking for size to create the door yourself, this creating bifold door discussion by DIY enthusiasts might help.
Conclusion
So, when it comes to Bifold Door Sizes, it’s all about understanding the difference between what’s on the label and what you’ll get. Understanding those “actual” measurements will save you from a lot of potential trouble.
Don’t forget to check the manufacturer’s specifications. Some manufacturers have unique measurements and instructions that can make all the difference.
Whether you choose standard or custom doors, measure the size accurately and double-check before sharing it with the manufacturer. This investment pays off in a beautiful and functional space.
