Sliding patio doors typically come in a few common sizes, with a standard two-panel sliding door usually ranging from 60 to 96 inches wide and about 80 inches tall. For homeowners and renovators planning a new install or replacing an existing sliding glass door, knowing those dimensions early helps you choose a door that fits the opening, suits the room, and avoids costly measuring or installation mistakes.

Sliding glass doors are a popular exterior door choice because they bring in more natural light, make rooms feel bigger and brighter, and can even increase the value of your home. A glass sliding door system also opens your home to an outdoor space like a patio or garden, making the two areas feel more connected.

This article breaks down standard patio sliding door sizes, the main types of sliding doors, common frame and door materials, how to measure for a proper fit, and the installation details to keep in mind before you buy.

How Wide is a Sliding Patio Door?

Well, there are common standard sizes for sliding doors, even though the width will vary by configuration. But, sliding patio doors have to be exactly the right size; there is an extremely small margin for error. If the sliding doors don't fit exactly, they won't be as secure or insulate your home as effectively as they could be since you can't adjust the doors.

To find out which sliding patio door sizes are appropriate for your home, you'll need to take some careful measurements so you can buy the correct size.

Sliding patio doors typically come in sets of twos and threes; it depends on the space that you're planning on covering with the doors. People generally pick sliding door systems that have two doors.

What are Common Sliding Patio Door Sizes?

While there is no single standard size for sliding patio doors and sliding glass doors, their dimensions usually follow a few common sizes based on panel count, with a typical standard width of 1500mm to 2400mm and many products commonly supplied in the 1600mm to 2400mm range. You'll need more panels for a wider space, or you'll need wider panels.

The typical heights for 2 or 3-panel sliding glass doors commonly range from 2000mm to 2500mm, with around 2100mm being especially common, and the metric sizes below being common market equivalents:

• 2032 millimetres

• 2082 millimetres

• 2438 millimetres

The typical widths for 2-panel sliding glass doors are:

• 1524 millimetres

• 1828 millimetres

• 2438 millimetres

A standard two-panel sliding door is typically 60 to 96 inches wide, with 60 to 72 inches being especially common.

The typical widths for 3-panel sliding glass doors are:

• 2743 millimetres

• 3658 millimetres

Manufacturers frequently supply larger standard sizes for major renovations, and many modern homes use sliding patio doors spanning roughly 3,000 mm to 4,500 mm wide.

Three-panel sliding doors are larger than two-panel options and are also commonly 80 inches tall.

Four-panel sliding doors also typically keep the 80-inch standard height and can provide wall-to-wall glass coverage.

None of the common sizes are right for my home

If none of the common or offered sizes fit with the space in which you want to fit your sliding doors, the best route to go with is to have bespoke doors made. Bespoke options are made to measure for non-standard openings, giving you a perfect fit.

Types of Sliding Patio Doors

Typically, a sliding door has multiple glass door panels that slide sideways along a track, often with one fixed panel remaining stationary and in place alongside the sliding panels. Depending on the opening and design, sliding doors can have two, three, four, or six panels. They give you quick and easy access to your outdoor space.

These doors are great because they don't open outward or inwards, which means they save wall space and don't need extra space to swing open. They can be slid completely open or just slightly open if there happens to be some bad weather. They also stay stationary and can't be accidentally slammed shut in the face of strong winds.

A glass sliding door also offers the widest views, with large glass panels and slim frames creating uninterrupted views, bringing in more natural light, and strengthening the link between indoor and outdoor spaces.

The choice of sliding door type that you go with will partly be determined by whether or not you're replacing an existing door or if you're adding the doors as part of a new renovation or extension.

A new opening will offer your more flexibility and choices than an existing opening will, and it can be sized around the available wall space and opening size if desired.

Inline sliding doors

This is the most common and traditional style of sliding door. There is usually a sliding mechanism with a top track that the doors can slide along horizontally to open and close using the handle.

This sliding door system is usually available in panel configurations of two, three or four. It's not uncommon to have multiple tracks for the doors to slide on. These multiple tracks allow the doors to slide both left and right.

These are the simplest sliding doors to install and are the easiest to work with. They also require less maintenance and upkeep, though smooth operation still depends on a proper fit.

Lift and slide sliding doors

This is a very popular sliding door type that relies on a complicated system of gears in the door's sash. When the handle is turned, this system of gears allows the door to be moved away from the frame and slid into any desired position.

Lift and slide systems can use multiple panels, usually from 2 up to 6 panels. This type of sliding door type is best suited to heavier doors that have frames made from heavier materials like timber or bigger doors that just naturally weigh more.

Tilt and slide sliding doors

This type of sliding door set is comparable to a combination of sliding doors and a tilt-and-turn window.

This combination of mechanisms allows you to open the top of the door at a tilted angle if you just want to have some ventilation in the room. The bottom of the door remains hinged to the frame, and the mechanisms are controlled by the door handle. In tilt and slide systems, threshold height affects accessibility and weather protection.

Slimline sliding doors

Slimline doors have slim door frames that give them a minimalist appearance. This gives you more glass and less frame to look at, with clean lines that suit contemporary designs and slimmer sightlines that help with maximising natural light in the house.

Pocket aluminium sliding doors

This type of sliding door is best suited to an entirely new opening as opposed to an existing open, and pocket systems are often chosen for wider openings. With these panel configurations, the sliding glass doors slide into pockets in the wall, meaning that they disappear completely when open so the opening can be fully open, which suits a modern design.

This is the best way to maximise the opening and create a grand and dramatic opening with your new sliding doors.

Open-corner sliding doors

These are among the most modern sliding patio doors. These doors allow you to have the sliding doors meet at a corner, and some configurations can use three panels. You can choose not to have a visible corner post, or you can opt to keep it if it suits your aesthetic. Some designs also run floor to ceiling, and a ceiling glass detail can create a visual break in a large glazed corner.

You can combine door systems and also make these pocket sliding doors as well, creating an even more contemporary look across various styles that will surely add value to your home.

Because of the nature of these sliding doors, there are a few things you'll have to take into consideration before you buy your doors. Life choices in sliding doors can greatly influence the overall functionality and aesthetics of your space. Choosing the right style, material, and size can make a significant difference in both appearance and energy efficiency. Consider how these factors align with your personal taste and lifestyle needs.

• You'll most certainly need to consult a structural engineer because doors need support structures. It'll be up to your engineer to tell you what you can and can't do with your space and the vision you have in mind.

• You might also want to consult an architect to get the best possible design and professional insight for all the possibilities you have.

This advice is especially relevant if you're planning on creating a new opening in your home to accommodate your doors. Involve your chosen installer as soon as you can and let them be a part of the process.

Automatic sliding patio doors

There is also an option to get automatic doors that you can open and close with just a button. These systems normally use a lock when closed for security.

Sliding Door Materials

The sliding door material that you choose can also dictate the style and size of patio doors that you can get and afford for your home.

uPVC

This is a popular choice for the frames on sliding glass doors. They're a popular choice because they're quite affordable and low maintenance, and you can also usually get uPVC in a huge range of colour options. uPVC doors generally require thicker frames for strength.

This material has been less popular lately because there are now better, sturdier materials that offer more benefits than uPVC does. uPVC is also not as stylish as the other materials on offer and can look a little outdated these days.

Timber

Timber doors are high-quality and look great, but they require a lot of maintenance to keep them in good order. Doors with this kind of frame are best suited to traditional homes as they have a classic and timeless look.

Timber is also available in a variety of styles which makes it more appealing. The timber frames are also strong enough to hold bigger panes of glass and are suitable for larger door sizes.

There are a few downsides, one being the price. Timber doors will require more materials and workers to manufacture and install. The other downside is also the maintenance; the doors will require regular painting and weatherproofing to keep them in good condition.

Aluminium

Aluminium is currently very popular in the world of sliding doors. The big downside to aluminium, before, was that the frames became easily discoloured, but now they come with a powder coating that prevents that.

The powder coating also means that these doors can come in a wide range of colours, just like uPVC. Unlike uPVC, aluminium is sturdy and can support the weight of larger doors with slimmer frames, with some systems accommodating panel sizes up to 2200mm wide.

This means that aluminium frames provide a sleeker, more modern look that fits in with any style of architecture. Aluminium frames also offer strong thermal performance, and thermal break technology can help reduce heat loss, improve energy efficiency, and significantly reduce energy bills.

How to Get the Measurements for Your Patio Doors

The best way to ensure that you purchase the right size of sliding patio doors is to take measurements of the space before you place an order.

You'll be measuring the "rough opening", which is the opening in which your doors will sit. These measurements won't include any mouldings or frames.

Step 1

Make sure you have the right tools before measuring or replacing a sliding glass door:

• A tape measure

• A pen or pencil

• A notepad

It'll be helpful if you can get an extra set of hands and eyes to help you take the measurements.

Make a rough sketch of the opening you're going to use for your sliding glass door so that you can note down where each measurement is taken from.

Step 2

You're going to be taking three different measurements to get the correct dimensions of the opening, checking the width at the top, the middle, and the bottom door area.

The numbers that you get should be very similar. These checks help confirm accurate measurements before ordering. If you happen to find any variation in the measurements, look for a door that will fit within the smallest number.

Step 3

You're going to be taking three different measurements of the height of the door; one on the top, one on the bottom, and one in the centre, which helps confirm whether your opening matches a standard height such as 80 inches. Make sure to measure all the way to the concrete on the door sill.

Step 4

This is the most important step; you double-check all of your measurements and make sure that they're all accurate or correct them if they aren't. This step can save you a lot of trouble down the line.

Step 5

When you have your final measurements and you've double-checked that they're accurate, it’s worth bearing in mind to get the final numbers right before ordering, especially if you are replacing an existing door, and you'll need to take 10mm off from both of your measurements.

This accounts for the trim and other details that you won't necessarily see. Once you do that, the measurements you have should help you buy an adequately sized set of patio doors.

Picking your patio doors isn't the last thing you have to do when installing. Check out our blog on how to dress a sliding patio door.

FAQs

Can I install my own sliding patio doors?

Yes, you can probably install or replace your sliding patio doors yourself if you have the right tools and installation experience. It's not recommended if you've never installed windows and doors; that experience is invaluable for this DIY project.

Remember that there's very little margin for error with installing your doors if you want to ensure you have a secure and weatherproof fit. Professional installation helps ensure weather resistance as well as excellent security, including key security features. It's wiser to just allow the professionals to handle the installation, since they’re more likely to achieve a proper fit and reliable smooth operation.

Can I get a sliding glass door with double glazing?

Yes, you certainly can. Standard glass is typically toughened glass, and you can choose a sliding glass door with either double or triple glazing depending on your budget. There are also different glass options to suit privacy, solar control, or appearance needs.