French Door Sizes: The Standard Dimensions You Need to Know
Standard French doors in the US market typically range from 30 to 72 inches in total width and come in heights of 80 inches (6’8″), 84 inches (7’0″), and 96 inches (8’0″). The most common configuration is a 60-inch wide double door with two 30-inch leaves, but interior and exterior applications follow different sizing rules that affect your rough opening and frame choices.
What Determines French Door Sizes?
French doors are hinged door systems with glass panes running most of their length. Unlike sliding or pocket doors, they require a framed opening that accommodates both door leaves, the jamb, hardware, and clearance for smooth operation.
The size you specify depends on three variables: the structural opening in your wall, the door’s function (interior passage vs. exterior entry), and the manufacturer’s unit size conventions. When buyers ask for “French door sizes,” they are usually asking about the total unit width and height — the dimensions of the pre-hung assembly that gets installed into the rough opening.
Standard French Door Sizes (Data Table)
The table below shows common standard sizes for pre-hung French doors in the US market. These are manufacturer unit sizes — the actual dimensions of the door frame that fits into your rough opening.
| Configuration | Common Widths (inches) | Standard Heights (inches) | Typical Rough Opening Width |
|---|---|---|---|
| Single leaf | 30, 32, 36 | 80, 84 | Unit width + 1/2″ to 3/4″ |
| Double leaf (2-panel) | 48, 60, 72 | 80, 84, 96 | Unit width + 1/2″ to 3/4″ |
| Double leaf (4-panel) | 72, 96 | 80, 84 | Unit width + 1/2″ to 3/4″ |
| Exterior double | 60, 64, 72 | 80, 84 | Unit width + 3/4″ to 1″ |
A 60-inch French door has two 30-inch leaves. A 72-inch door has two 36-inch leaves. Each leaf width matters for accessibility and for moving furniture through the opening — a 30-inch leaf provides less clearance than a 36-inch leaf even when both doors are fully open.
Interior vs. Exterior French Door Sizes
Interior and exterior French doors differ in sizing requirements because of their structural demands.
Interior French doors are typically lighter, use thinner glass or no glazing, and have simpler jambs. Common interior widths are 48, 60, and 72 inches. The standard interior height is 80 inches, though 84-inch doors are increasingly specified for rooms with taller ceilings.
Exterior French doors require thicker frames, insulated glass, weatherstripping, and often a sill pan or threshold. The active leaf (the door you open regularly) must meet building code egress requirements — typically a minimum clear opening of 32 inches wide and 24 inches high when fully open. This means the active leaf itself needs to be at least 34 to 36 inches wide before hardware and frame projections reduce the clear opening.
Exterior rough openings are usually larger than interior ones for the same nominal door size because exterior jambs are thicker and the unit includes weatherproofing components. For a 60-inch exterior unit, expect a rough opening around 61.5 to 62 inches wide; for a 72-inch unit, plan for roughly 73.5 to 74 inches.
Popular Variations: Narrow, Small, 60-Inch, and Single Doors
Not every opening accommodates a full double door. Here are the common variations buyers specify:
Single interior French door — A single leaf with glass, sized like a standard passage door: 30, 32, or 36 inches wide by 80 inches tall. A 36×80 interior French door is the most common single configuration because it matches standard hallway and bedroom door openings.
Narrow interior French doors — For closets, pantries, or tight hallways, single doors can go down to 24 or 28 inches wide. These are not standard pre-hung units from most manufacturers, so they typically require custom fabrication.
Small interior French doors — When space is constrained but you still want the glass-panel look, a 48-inch double door (two 24-inch leaves) is the smallest common French door configuration. Below that, you are in custom territory.
60-inch interior French doors — The most frequently specified double-door size. Two 30-inch leaves fit openings that previously held a standard 60-inch sliding patio door, making this a common replacement choice.
Single exterior French door — Less common than double units. Exterior singles typically start at 36 inches wide to meet egress requirements, with the leaf width measured differently from interior doors because of the thicker frame and threshold.
Glass and Style Options: Frosted, White, Black, Solid, Folding
The size of your French door interacts with your glazing and style choices in practical ways.
Glass type affects privacy and light transmission. Clear glass maximizes light but offers no privacy. Frosted or obscured glass is popular for bathrooms and offices where light is wanted without a clear view through the door. For a 60-inch double door, frosted glass on both leaves is a common interior specification.
Color and finish — White interior French doors are the default in most residential and commercial projects because they match standard trim. Black interior French doors are specified for modern or industrial aesthetics; the darker frame makes the glass area read more prominently. Black is also common for exterior units because it hides dirt and coordinates with black window frames.
Solid vs. glazed — Solid interior French doors (no glass) are specified when sound isolation or visual privacy matters more than light transmission. They are sized identically to glazed units but lack the structural limitations that glass panels impose on leaf width.
Folding French doors — These are multi-panel systems that fold rather than swing. They are not true French doors but are often grouped under the same search. Sizing is modular: each panel is typically 24 to 36 inches wide, and total width is determined by the number of panels. A 4-panel folding system might span 96 to 144 inches.
Sidelites and side panels — When your rough opening is wider than the door unit, sidelites fill the gap. A 60-inch French door with two 12-inch sidelites fits a 72-inch rough opening. Sidelites are sized to match the door height and are available in matching glass and frame finishes.
How to Measure for French Doors
Accurate measurement prevents the most common sourcing error: ordering a unit that does not fit the opening. Follow this sequence:
Step 1: Measure the rough opening width. Measure at the top, middle, and bottom of the opening. Use the narrowest measurement. The rough opening should be 1/2 to 3/4 inch wider than the door unit for interior doors, and 3/4 to 1 inch wider for exterior doors to allow for shimming.
Step 2: Measure the rough opening height. Measure from the finished floor to the top of the opening at both the left and right sides. Use the shorter measurement. Account for flooring thickness — if you are installing before the floor is laid, subtract the finished floor height from your measurement.
Step 3: Check the wall thickness and jamb depth. Standard interior walls are 4-9/16 inches deep (drywall on both sides of a 2×4 stud). Exterior walls are typically 6-9/16 inches or deeper. Your door jamb must match this dimension.
Step 4: Confirm swing direction and clearances. Decide whether the doors swing inward or outward. Interior doors almost always swing into the room. Exterior doors swing inward in most residential applications. Verify that the swing arc is clear of furniture, walls, and light switches.
Step 5: Verify unit size vs. rough opening. The unit size is the door frame’s outer dimension. The rough opening is the hole in your wall. The difference between them is the shim space. A 60-inch unit needs roughly a 61.5-inch rough opening for interior installation, not a 60-inch opening.
Terms Buyers Should Know
| Term | What it means | Why it matters when buying |
|---|---|---|
| Rough opening (RO) | The framed hole in the wall where the door unit installs | Must be larger than the unit size to allow for shimming and leveling |
| Unit size | The outer dimension of the pre-hung door assembly, including the jamb | This is the size you order, not the size of the door leaves |
| Active leaf | The door leaf that opens regularly; the other leaf may be fixed | Determines clear opening width for egress and furniture movement |
| Jamb depth | The thickness of the door frame, matching the wall thickness | Mismatched jamb depth creates unsightly gaps and installation problems |
Related Considerations for Your Project
Standard sizes vary by manufacturer. A “standard” 60-inch French door from one brand may have a different unit width than the same nominal size from another. Always verify the exact unit dimensions and required rough opening from the manufacturer’s specification sheet before framing or ordering.
Metric vs. imperial sizing. If you are sourcing from international manufacturers or working on a project outside the US, note that metric door sizes do not convert cleanly to imperial standards. Common metric widths are 800mm, 900mm, and 1000mm (approximately 31.5, 35.4, and 39.4 inches). Confirm whether the manufacturer produces to imperial or metric dimensions before specifying.
Building codes and clearances. For exterior French doors, local building codes govern minimum clear opening widths for egress. The International Residential Code generally requires a clear opening of at least 32 inches wide, but your jurisdiction may differ. For commercial or ADA-accessible projects, the 32-inch clear opening requirement applies to the path of travel, which means the door leaf must be wider than 32 inches to account for hardware and frame projections.
Non-standard openings. Existing homes frequently have openings that do not match any standard size. A 62-inch opening, for example, will not accept a standard 60-inch unit cleanly, and a 72-inch unit is too wide. In these cases, you have two options: reframe the opening to fit a standard size, or order a custom unit. Custom sizing adds lead time and cost but avoids structural modification.
Office and commercial interiors. French doors for office applications often need acoustic performance and privacy. Consider solid-core leaves or doors with acoustic glazing. Standard sizes still apply, but hardware requirements — such as lever handles with locking mechanisms — may differ from residential specifications.
Custom sizing is the norm for non-standard openings. Most reputable manufacturers, including those producing in China, offer custom dimensions at a modest premium over standard sizes. If your project involves multiple non-standard openings, custom fabrication may be more cost-effective than reframing each one.
How We Meet These Standards
As a manufacturer of aluminum and wood French doors, we build to both standard and custom dimensions. Our approach is straightforward: we start from the size tables above, then adjust the profile structure and fittings to match the building codes and installation practices of your target market.
For buyers sourcing from us, the key advantage is that we handle the sizing variables on our end. We confirm your rough opening dimensions, jamb depth, and swing direction before production. We also provide full documentation — packing lists, proforma invoices, and customs paperwork — so the units arrive with the specifications you approved.
If your project uses standard US dimensions, we produce to those. If you are working in metric or need a non-standard leaf width, we adjust the frame profile accordingly. Pre-shipment testing covers air-tightness, water-tightness, and wind resistance, which matters most for exterior units where the rough opening and frame seal determine performance.
