A standard patio door is 80 inches tall from floor to top of frame
Most patio doors sold in North America come in one height: 80 inches (6 feet 8 inches). This measurement runs from the finished floor to the top of the door frame, not including any transom window above it. The 80-inch standard has held steady for decades because it matches the height of interior doorways in most homes built after the 1950s.
If your home was built before 1950 or is older than that, your doorways may be 78 inches tall instead. Measure your existing door frame before ordering a replacement, because a door that is 2 inches too tall will not fit without cutting the frame opening.
The actual glass panel itself is slightly shorter — usually 76 to 78 inches — because the frame takes up the remaining space at top and bottom.
Key Takeaways
- Standard patio doors are 80 inches tall from floor to frame top, which matches most interior doorways built after 1950.
- Older homes may have 78-inch openings, so measure your existing frame before ordering a replacement door.
- The glass panel is shorter than the frame height because the frame itself occupies 1 to 2 inches at the top and bottom.
- Non-standard heights exist but cost more and take longer to order, so confirm your opening size first.
- Width varies independently of height, so a tall door can be narrow or wide depending on how many panels it has.
Why 80 inches became the standard
Building codes and construction practices in the United States settled on 80 inches as the standard interior door height in the mid-20th century. This height works for most people, fits standard framing lumber, and allows for a consistent ceiling line throughout a home. When patio doors became common in residential construction, manufacturers built them to match that same 80-inch height so they would fit into the same wall openings as hallway doors.
This standardization made doors cheaper to produce and easier to stock. A builder or homeowner could order a patio door the same way they ordered an interior door — by width and style — without negotiating a custom height. That cost savings is still reflected in patio door prices today.
Measuring your existing patio door opening
If you are replacing a patio door, measure from the bottom of the finished floor to the top of the existing frame opening. Do not measure to the ceiling or to any trim. Use a metal tape measure, not a cloth one, and measure in at least three places — top, middle, and bottom — because older frames sometimes settle and are not perfectly square.
Write down the smallest measurement you find. If your opening is 80 inches, you can order a standard door. If it is 78 inches or 79 inches, you will need a custom or non-standard door, which usually costs $200 to $500 more and takes 4 to 8 weeks to arrive.
Also measure the width of the opening in three places (left, center, right) and note which measurement is smallest. Patio doors come in standard widths — typically 32, 36, 48, 60, and 72 inches — so your opening width may limit your door style choices.
Non-standard heights and when you might need them
Some homes have openings taller or shorter than 80 inches. A home with 9-foot ceilings might have a 96-inch opening. A mobile home or a home with a very low ceiling might have a 76-inch opening. In these cases, you have two choices: modify the opening to fit a standard 80-inch door, or order a custom door built to your opening size.
Modifying the opening means hiring a carpenter to cut or build up the frame, which costs $300 to $800 depending on whether you need to cut into the header or add material. Ordering a custom door costs $500 to $1,500 more than a standard door but avoids the frame work. Compare both costs before deciding.
Some manufacturers offer a limited range of non-standard heights — 78 inches and 96 inches are the most common — at a smaller premium than a fully custom door. Ask your door supplier what heights they stock or can order quickly.
How door width and height work together
Patio door height and width are independent. An 80-inch door can be 32 inches wide (single panel), 60 inches wide (two panels), or 72 inches wide (three panels). The height stays the same; only the number of glass panels and the total width change.
This matters because a narrow opening might force you into a single-panel door even if you prefer the look of two panels. Measure your width carefully so you know what styles are actually possible in your space. A 48-inch opening, for example, can fit a 48-inch two-panel door but not a 60-inch door.
Frame and threshold height considerations
The 80-inch measurement includes the frame but not the threshold (the raised piece at the bottom that you step over). Thresholds are typically 1 to 2 inches tall, so the total height from the ground to the top of the door frame is closer to 81 or 82 inches if you include the threshold.
If you are replacing a door and the threshold is damaged or worn, you may be able to replace just the threshold without replacing the entire door. Thresholds come in aluminum, vinyl, and composite materials and cost $50 to $200 depending on width and material. A carpenter can usually install a new threshold in an hour.
If your opening is very tight and you are trying to fit a door into a space that seems too small, ask whether a low-profile threshold is available. Some manufacturers offer thresholds that are only 0.5 inches tall, which can save you critical space.
Transom windows and doors taller than 80 inches
If you want a patio door that looks taller than 80 inches, you can add a transom window — a fixed glass panel mounted above the door frame. Transoms are typically 12 to 24 inches tall and do not open. They let in more light and make the door look more dramatic without changing the actual door height.
A transom is ordered separately from the door and installed above it. The combined height of door plus transom can reach 96 to 104 inches. Transoms cost $200 to $600 depending on size and frame material, and they require the opening to be larger than a standard door opening.
If you are considering a transom, measure the height of your opening from floor to ceiling. You need at least 100 inches of clear space to fit an 80-inch door with a 20-inch transom and still have room for trim and installation.
Frequently Asked Questions
Can I fit an 80-inch door into a 78-inch opening?
No. A door that is 2 inches too tall will not fit without cutting the header (the beam above the opening), which is structural work that requires a permit and an engineer. It is cheaper and safer to order a custom 78-inch door or to have a carpenter modify the opening to 80 inches by raising the threshold or lowering the header.
Do all patio doors come in 80 inches?
Most standard patio doors are 80 inches, but some manufacturers offer 78 inches and 96 inches as stock options. Custom heights are available from most door makers but cost more and take longer. Check with your supplier about what heights they have in stock before ordering.
Does the height change if I choose a sliding door versus a swinging door?
No. Both sliding patio doors and hinged (swinging) patio doors come in the same standard heights. The difference is in how they open, not in their size. A 80-inch sliding door and an 80-inch swinging door will fit the same opening.
What if my patio door opening is wider than any standard door?
Patio doors wider than 72 inches are custom orders. You can also use a multi-panel system with two or three doors side by side, which lets you cover a very wide opening with standard-sized doors. A three-door system (three 36-inch doors) gives you 108 inches of width while keeping each door at the standard 80-inch height.
Should I measure to the top of the trim or the top of the frame?
Measure to the top of the frame opening itself, not to any trim or molding around it. The door frame sits inside the opening, and the trim covers the gap between the frame and the wall. Measuring to the trim will give you a number that is too large and will result in a door that does not fit.