What Are Double Dutch Exterior Doors?
A double Dutch exterior door is a pair of entry doors that split horizontally. The top and bottom halves operate independently, so you can open the upper section for ventilation while keeping the lower half closed — useful for airflow, pet access, or passing items through without fully opening the entry. When both halves are latched together, the door functions as a standard full-height unit.
This configuration is distinct from a single Dutch door (one split panel) because the double version uses two full door slabs side by side, each with its own horizontal split. That makes it a practical choice for wide openings where a single door would feel undersized, or for light commercial settings such as farm stands, cafes, or equestrian facilities that want the split-door function across a broader entry.
Buyers should understand that “double Dutch” does not refer to a standardized industry category with universal dimensions. It is a configuration applied to door slabs and pre-hung units. As a result, your procurement decisions hinge on the same variables that apply to any exterior door system: frame dimensions, material performance, hardware compatibility, and local building code compliance.
Standard Exterior Door Frame Dimensions and Sizes
Exterior door frames in North America and most export markets follow conventional rough opening and finished opening standards. The most common single exterior door widths are 30, 32, and 36 inches. Standard heights are 80 inches (6’8″) and 96 inches (8’0″). For a double-door configuration, you are effectively combining two slab widths plus the center meeting stile or astragal.
Typical double door widths work out as follows:
| Configuration | Finished Opening Width | Rough Opening Width |
|---|---|---|
| Two 30-inch doors | 60 inches | 62 inches |
| Two 32-inch doors | 64 inches | 66 inches |
| Two 36-inch doors | 72 inches | 74 inches |
The rough opening is the framed gap in the wall before the door unit is installed. It must be approximately 2 inches wider and 1 inch taller than the finished door unit to allow for shimming and leveling. The finished opening — the actual clear width and height of the door system — is what matters for code compliance and architectural drawings.
Frame dimensions are not the same as slab dimensions. A pre-hung unit includes the jambs, which typically add 4-1/2 to 6 inches of total width depending on wall thickness and jamb depth. When specifying frames, you need three numbers: the slab width, the jamb depth (matched to your wall thickness), and the rough opening size for the installer.
For double Dutch doors, frame height is where the configuration gets specific. Each half of the split operates independently, so the frame must accommodate the intermediate horizontal rail where the two panels meet. This rail adds structural depth compared to a standard door frame. Confirm with your supplier that the frame profile is engineered for the split configuration rather than adapted from a standard single-piece door frame — this affects long-term alignment and sag resistance.
Average Exterior Door Width: What You Need to Know
The average exterior door width for residential single entry doors is 36 inches. This is the most common specification for new construction and replacement projects. The 32-inch width is frequently used for secondary entries and side doors, while 30-inch doors appear in older homes and tight spaces.
For double Dutch exterior doors, the average total width lands between 60 and 72 inches — two 30-inch, two 32-inch, or two 36-inch slabs. The 64-inch configuration (two 32-inch doors) is the most frequently specified because it balances entry presence with structural practicality.
Height standards are less variable. The 80-inch door remains the dominant residential standard, though 96-inch doors have grown in popularity for modern and custom homes. If your project involves commercial occupancy, verify the required clear opening height and width under the applicable building code. Egress requirements can mandate a minimum clear opening that differs from standard residential dimensions, and a split door configuration must still meet those requirements when fully opened.
Material Options: Steel, Fiberglass, and Composite Frames
The material of the door slab and the frame system are separate decisions, and both affect performance, maintenance, and cost.
Steel exterior doors use a galvanized steel skin over an insulating foam core, typically polyurethane. They offer the highest structural rigidity of the common options and do not warp, crack, or swell like wood. Steel is the standard choice for commercial and light industrial applications because of its impact resistance and security profile. The main drawback is dents — once the skin is deformed, it is difficult to repair without visible marks. Thermal performance depends on the core and whether the door uses a thermal break in the frame.
Fiberglass exterior doors use a fiberglass skin over an insulating core. They resist dents better than steel, do not rust, and can be manufactured to mimic wood grain convincingly. Fiberglass is dimensionally stable across temperature swings, which makes it a strong candidate for coastal or high-humidity environments where steel may corrode at cut edges and wood will move. It is generally more expensive than steel at comparable specification levels.
Composite frames pair a non-wood frame material — often fiberglass-reinforced plastic or engineered wood with a weather-resistant veneer — with the door slab. A fiberglass exterior door with composite frame is a popular combination because it eliminates the rot risk associated with traditional wood jambs while providing a paintable surface that matches the door.
For double Dutch doors specifically, material choice affects the split rail. The horizontal meeting rail must maintain its alignment over years of independent operation. Steel and fiberglass both perform well here because they do not absorb moisture and swell the way solid wood can. If wood is specified for aesthetic reasons, budget for a higher-grade species and proper sealing on all cut edges.
Custom Size Steel Exterior Doors for Commercial Projects
Custom sizing is common for steel exterior doors, particularly in commercial work. Steel doors are manufactured from flat stock and fabricated to specification, so non-standard widths and heights do not require exotic tooling. The practical limits are set by the frame system and the hardware — a door that is unusually wide or tall needs heavier hinges, additional reinforcement, and sometimes a center mullion to prevent sag.
For double steel exterior doors in commercial applications, the typical specification range is:
- Width per leaf: 30 to 48 inches
- Height: 80 to 120 inches
- Thickness: 1-3/4 inches standard, 2 inches for heavy-duty
When ordering custom sizes, provide the supplier with the exact finished opening dimensions, the wall construction thickness, and the required fire rating if applicable. Fire-rated steel doors are tested as complete assemblies — modifying the door or frame after fabrication can void the rating. If your project requires fire-rated double doors, order the pair as a matching set from a single manufacturer and do not mix components.
Price Ranges and Cost Factors
Double Dutch exterior door pricing varies widely based on material, size, glass, hardware, and whether you are buying slabs or pre-hung units. The ranges below reflect typical wholesale and direct-from-manufacturer pricing for B2B buyers in 2026.
| Configuration | Steel | Fiberglass | Wood |
|---|---|---|---|
| Pre-hung double unit, standard size (64″ x 80″) | $1,200 – $2,800 | $1,800 – $3,500 | $2,500 – $5,000+ |
| Pre-hung double unit, custom size | $1,800 – $4,000 | $2,500 – $5,000 | $3,500 – $7,000+ |
| Slab pair only (no frame) | $700 – $1,500 | $1,200 – $2,200 | $1,800 – $3,500 |
These figures assume basic hardware and no decorative glass. The main cost drivers are:
- Material tier: Steel is the entry point; fiberglass adds roughly 30–50% over comparable steel; wood costs depend heavily on species.
- Glass and glazing: A single insulated glass lite adds $200–$600 per unit depending on size and coating. Low-E coatings, argon fill, and impact-rated glass increase cost further.
- Hardware package: The split configuration requires specialized hinges and locking hardware. Expect to budget $150–$400 per door for quality hardware that will hold alignment over time.
- Custom sizing: Non-standard dimensions add 10–20% to unit cost because fabrication is not from stock blanks.
- Finishing: Factory-applied primer or paint adds cost but is usually worth it for steel, which must be protected from corrosion at all cut edges.
Labor and installation are separate line items. Professional installation of a pre-hung double door typically runs $400–$1,000 depending on regional labor rates and whether the rough opening needs modification. DIY installation is possible for experienced builders, but the split mechanism requires precise alignment — errors here lead to chronic binding and air leakage.
Terms buyers should know
| Term | What it means | Why it matters when buying |
|---|---|---|
| Rough opening | The framed gap in the wall, larger than the door unit, where the pre-hung door is installed | If your rough opening is wrong, the door will not fit. Always measure this first and provide it to suppliers |
| Pre-hung unit | A door slab already mounted in its frame (jambs), ready to install | Buying pre-hung ensures the split halves align correctly; slab-only doors require skilled framing to avoid misalignment |
| Astragal | The vertical strip that covers the gap between two door leaves | On double doors, the astragal seals the center meeting point and carries the locking hardware |
| Thermal break | An insulating barrier between the interior and exterior metal surfaces of a frame | Prevents condensation and heat loss in steel and aluminum frames; essential for cold-climate performance |
How to Get a Quote for Your Project
When you are ready to buy double Dutch exterior doors, the quality of your quote depends on the completeness of your specification. A supplier cannot price accurately without these details:
- Door count and sizes — exact width and height per leaf, plus whether you need pre-hung units or slabs
- Material and finish — steel, fiberglass, or wood; factory primer or finished color
- Glass requirements — if any, including size, glazing type, and performance coatings
- Hardware specification — hinge type, lockset, and whether you need commercial-grade panic hardware
- Frame details — jamb depth for your wall thickness, and whether you need a composite or steel frame
- Quantity and packaging — bulk orders change the unit price and freight cost per door
- Destination — shipping cost is significant for doors, especially in full container loads versus less-than-container loads
For B2B buyers, MOQ and lead time are practical considerations. Most direct-from-factory suppliers require a minimum order of 10 to 20 units for custom manufacturing, though stock sizes may be available in smaller quantities. Lead times for custom double Dutch doors typically run 3 to 6 weeks from order confirmation to factory completion, plus transit time. Factor this into your project schedule — custom split doors are not an off-the-shelf product.
Here is how the industry works: most importers and distributors buy from manufacturers who specialize in door fabrication. As a factory direct supplier, Jusen Door and Windows Manufacturing Co., Ltd. operates this way — we manufacture thermal-break aluminum doors and windows, solid wood doors, and steel entry systems, and we ship directly to buyers without a middleman markup. For double Dutch exterior doors, our approach is straightforward: we build to your specified dimensions, match the profile structure and fittings to the building codes of your target market, and run pre-shipment testing on air-tightness, water-tightness, and wind resistance before the goods leave our factory.
We handle full customization on size, color, glass, and hardware accessories, and we provide complete export documentation including packing lists, proforma invoices, and customs paperwork. Both FCL and LCL shipping are available from our China factory. If you are working on a project that needs double Dutch exterior doors in volume, send us your specifications and quantities — we will respond with a detailed quote that covers the unit pricing, MOQ, and production timeline for your review.
Frequently Asked Questions
What is the difference between a Dutch door and a double Dutch door?
A single Dutch door is one door slab split horizontally into two independently operating halves. A double Dutch door uses two such split slabs side by side, creating a wider entry with the same top-and-bottom independence on each leaf.
Are double Dutch doors secure?
When fitted with quality multi-point locking hardware, a double Dutch door can be as secure as a standard entry door. The split configuration adds a meeting rail where the two halves join, which requires the locking hardware to engage both the top and bottom sections. Commercial-grade steel options provide the highest security level.
Can double Dutch doors be used as primary exterior entry doors?
Yes, provided the door meets local building code requirements for egress and is properly weather-sealed. The split configuration does not inherently reduce structural performance, but the hardware and weatherstripping at the split line must be specified correctly for exterior exposure.
How do you weatherproof a double Dutch door?
The critical points are the horizontal split rail and the vertical meeting stile between the two leaves. Both need compression weatherstripping rated for exterior use. The door should also have a sill pan and proper flashing at the threshold. Factory-tested units with air and water infiltration ratings take the guesswork out of this — request the test data from your supplier.
Do double Dutch doors need special hardware?
Yes. The split configuration requires hinges that support each half independently and a locking mechanism that secures both the upper and lower sections. Standard single-door hardware will not work because the door has no continuous edge from top to bottom.
