French Doors Guide: Interior & Exterior Options | Jusen Manufacturer

16 min read

An overseas buyer visited our factory last spring. They had spent six months sourcing French doors from three different countries. When they walked into our wood drying workshop and saw the moisture meters on every stack of oak, they paused. “This is why the last supplier’s doors warped,” they said. That moment — seeing the process rather than just the price list — is what separates a real manufacturer from a trading company.

French doors have been specified in architecture since the 1600s, and they are not going anywhere. They deliver something few other door types can: full-height glass, a wide opening, and that quiet visual rhythm of two panels meeting in the middle. For contractors and designers, they solve the problem of bringing light into deep rooms. For villa developers, they make the garden part of the living room.

This guide comes from our production floor, not from a marketing desk. At Jusen Doors & Windows Manufacturing Co., Ltd., we have spent over 20 years building solid wood doors and aluminum windows for global clients. We operate our own wood drying, spray finishing, and aluminum processing workshops. What follows is how we actually manufacture interior and exterior French doors — and what you should know before you source them.

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Interior French Doors: Materials, Styles, and Application

Interior French doors are less demanding than exterior ones in terms of weather resistance. That does not mean they are simpler to make well. An interior door that warps, a panel that rattles, or a finish that yellows will ruin a high-end residential project just as fast as a leaky exterior door.

Solid Wood Interior French Doors — The Premium Choice for Residential & Hospitality Projects

Solid wood is the default specification for luxury interiors. The acoustic performance of a solid oak door — roughly 30 dB reduction depending on thickness and construction — is noticeably better than hollow-core alternatives. The grain, the weight, the way the door closes with a solid thud: these are things clients feel, not just see.

In our factory, we work with oak, walnut, mahogany, cherry, and several other hardwood species. Each has different movement characteristics. Oak is stable and forgiving. Walnut is dimensionally stable but expensive. Mahogany is the classic choice for tropical climates because of its natural resistance to moisture.

Here is where our process differs from smaller shops. We operate our own wood drying workshop with computerized kilns. Every board is dried to a target moisture content of 8–12%, depending on the destination market. A door shipped to Dubai needs different moisture content than one shipped to Norway. We adjust for that. If you skip this step, the door will move after installation. We have seen it happen with competitor products — doors that fit perfectly in the factory but bind or crack six months after installation.

For applications, think luxury residences, hotels, executive offices, and villa projects. We manufacture interior French doors in custom sizes and designs — two-panel, four-panel, or with sidelites. Our design team works from your architectural drawings or from a reference photo.

Glass Configurations for Interior French Doors — From Clear to Decorative

The glass is half the visual impact of a French door. For interior applications, the options break down into two categories: functional and decorative.

Functional glass includes clear tempered, frosted, tinted, laminated, and low-E glass. Tempered is mandatory for safety in most jurisdictions. Laminated adds acoustic insulation and security. Frosted or patterned glass provides privacy while still transmitting light — useful for home offices or ground-floor bathrooms.

Decorative options include beveled glass, leaded glass, and textured patterns. These are typically specified in traditional or heritage-style projects. We can produce most of these configurations in-house or source them from our established glass partners.

When you work with our engineering team, we ask about the project location, the orientation of the door (north-facing rooms get less light), and the privacy requirements. That changes the glass specification. A door between a kitchen and a dining room needs clear glass. A door between a hallway and a bedroom needs frosted.

For interior doors where acoustic insulation matters — think home theaters or conference rooms — we recommend double-glazed units. The air gap between panes breaks the sound path.

Interior French Door Hardware: Hinges, Handles, and Operating Systems

Hardware makes or breaks the daily experience of a French door. A door that sags on its hinges, a handle that feels loose, or a lock that sticks will generate complaints long after the aesthetics are forgotten.

We supply supporting hardware as part of our complete door solutions. For interior French doors, the standard setup is:

• Butt hinges — 3 per door leaf for standard heights, 4 for doors over 2200mm
• Mortise locks — preferred over rim locks for a cleaner look
• Lever handles — available in brass, chrome, matte black, or satin nickel

For high-traffic interior applications, we recommend multi-point locking. It distributes the load across the door edge, preventing sag over years of use. The hardware finish should match the interior design scheme. We offer all standard finishes and can source custom ones on request.

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Exterior French Doors: Durability, Weather Resistance, and Security

Exterior French doors face a different set of problems. Rain, UV, temperature swings, and attempted break-ins. The engineering requirements are fundamentally different from interior doors.

Solid Wood Entry French Doors — Engineering for Outdoor Performance

The challenges are real. Wood expands and contracts with humidity. UV light degrades finishes. Rainwater finds every seam. A solid wood exterior door must be engineered to handle all of this.

Our approach starts with species selection. For exterior applications, we prefer:

• Engineered wood — a veneer over a stable core (typically plywood or finger-jointed staves). This eliminates the expansion issues of solid wood.
• Glulam — for large, heavy panels where stability is critical
• Solid wood with proper drying — for clients who insist on solid construction, we use quarter-sawn lumber, which is more dimensionally stable than plain-sawn

The next critical step is finishing. Our spray finishing workshop applies multiple coats of high-performance finishes — typically a primer, two intermediate coats, and a topcoat. Each coat is sanded and cured before the next. This is not a quick paint job. It is a protective system that can last 5–10 years before refinishing, depending on exposure.

For clients in extreme climates, we recommend aluminum-clad exteriors (see below) or a deep overhang to protect the door from direct rain.

Aluminum-Clad and Aluminum-Framed Exterior French Doors

Aluminum is the low-maintenance answer for exterior French doors. It will not rot, warp, or require refinishing. Powder-coated aluminum maintains its appearance for decades.

Our aluminum alloy window and door manufacturing line produces thermal break profiles with polyamide strips. These break the thermal bridge between interior and exterior, reducing heat transfer and preventing condensation on the interior frame.

The big advantage of aluminum is structural strength. You can achieve slimmer sightlines with aluminum than with wood — the frame can be narrower while still supporting large glass panels. This is why modern architecture favors aluminum French doors for floor-to-ceiling openings.

We also produce hybrid solutions: wood on the interior face, aluminum on the exterior. The wood provides warmth and acoustic insulation. The aluminum provides weather protection and zero maintenance. This is a growing trend in luxury villa and hospitality projects.

Security Features and Glazing for Exterior French Doors

Exterior French doors are a potential entry point. The glass is a vulnerability, and the locking mechanism must be robust.

We recommend for all exterior French doors:

• Multi-point locking systems — at minimum 3 points, ideally 5. These engage the door into the frame at multiple points, making forced entry significantly harder.
• Laminated safety glass — two panes bonded with a plastic interlayer. Even if the glass breaks, it stays in place. This is a major deterrent.
• Hinge-side security pins — steel pins that engage the frame when the door is closed, preventing removal of the door by cutting the hinges.
• Anti-lift devices — for doors with exposed hinges, these prevent the door from being lifted off the hinges.

Our engineering team provides technical drawings and specifications to support architects in meeting local building codes. If you need a specific security rating, we will work with you to achieve it. Customized shop drawings are provided within 24 hours of inquiry.

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French Door Materials Comparison: Wood vs. Aluminum vs. Hybrid

We manufacture all three types. That gives us a perspective that suppliers who only make one type do not have. Here is the honest comparison.

Solid Wood French Doors — Aesthetic Superiority with Proper Maintenance

Solid wood is the premium choice. The visual warmth, the natural grain, the acoustic properties — nothing matches it. For interior applications, it is the obvious choice.

For exterior applications, the maintenance is the trade-off. A wood exterior door needs refinishing every 3–7 years, depending on exposure. In harsh climates, that interval shortens. We are not going to pretend otherwise.

That said, wood is also the most repairable. Scratches can be sanded out. Dents can be steamed. A well-maintained wood door lasts 50+ years. Our quality control ensures every door meets strict standards before it leaves the factory, but the maintenance is on the building owner.

Choose solid wood if: the project demands the highest aesthetic standard, the client accepts periodic maintenance, and the door is protected by an overhang or porch.

Aluminum French Doors — Modern Minimalism and Low Maintenance

Aluminum is the workhorse. It is strong, light, and maintenance-free. Powder-coated finishes are available in any RAL color. For contemporary architecture, the slim profiles and large glass areas are a design advantage.

The downsides: aluminum conducts heat (unless thermal break profiles are used — always specify these), and the finish can be scratched or chipped, which is difficult to repair. Anodized finishes are more durable than powder coating but have fewer color options.

From a cost perspective, aluminum is typically comparable to mid-range wood, but lower than premium hardwood.

Choose aluminum if: the project is contemporary, the door is fully exposed to weather, or the client wants zero maintenance.

Hybrid Wood-Aluminum French Doors — The Best of Both Worlds

This is what we recommend for exterior French doors in luxury projects where budget allows. Wood on the interior, aluminum on the exterior.

You get the warmth and acoustic performance of wood inside. You get weather protection and zero maintenance outside. The hybrid approach also allows for a thinner profile than a wood-only door, since the aluminum provides structural strength.

The manufacturing is more complex — two materials must be integrated perfectly. Our factory has the advantage of producing both components in-house. We control the tolerances, the finish, and the assembly. If you are working with a supplier who outsources either component, the risk of misalignment increases.

Choose hybrid if: the project demands wood aesthetics inside, weather protection outside, and the construction budget can accommodate a premium product.

Feature	Solid Wood	Aluminum	Hybrid (Wood/Aluminum)
Aesthetic	Premium, natural grain	Modern, minimal	Wood interior, aluminum exterior
Maintenance	High (refinish every 3-7 years)	Low (clean occasionally)	Low (exterior is aluminum)
Durability	Good, with proper drying & finishing	Excellent	Excellent
Thermal Performance	Good (natural insulator)	Good with thermal break profiles	Good (wood interior + thermal break)
Acoustic Performance	Excellent	Moderate	Excellent
Cost	Medium to High	Medium	High
Best For	Interior luxury, protected exteriors	Contemporary exteriors, commercial	Luxury exteriors, extreme climates

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Customization Options for French Doors: Sizes, Designs, and Finishes

This is where working with a real factory pays off. A trading company can only sell what they have. We can build what you need.

Custom Sizing and Configuration for Project-Specific Requirements

Standard French door configurations are 2-panel, 4-panel, and 6-panel. But renovation projects rarely have standard openings. Old buildings, custom architecture, and retrofit work all demand non-standard sizes.

Our policy is simple: we manufacture fully custom sizes. Share your opening dimensions and our design team will produce shop drawings within 24 hours. We will flag any design issues — for example, if the door is too wide for the hinge type, or if the weight requires additional reinforcement.

We also produce sidelites, transoms, and matching fixed panels. These create a complete entry system rather than just a door. For villa projects, we often supply the entire entry facade: double French doors with sidelites and a transom above.

Finish Options: Stains, Paints, and Textures

The finish is what clients see every day. Getting it right is non-negotiable.

For wood, the options are:

• Natural stains — transparent, enhancing the grain. Available in any shade from light oak to ebony
• Transparent finishes — protect the wood while allowing it to age naturally
• Opaque paints — full coverage, available in any RAL or NCS color. We color-match to your sample or specification

Texture options include smooth, wire-brushed (which emphasizes the grain), and distressed (for a vintage look).

For aluminum, the options are anodized or powder-coated. Powder coating is available in any RAL color. Anodized finishes are more durable but limited to silver, bronze, and black.

Our spray finishing workshop ensures consistent, factory-grade quality. We do not use hand brushing for anything except touch-ups. Every coat is applied professionally, cured, and inspected.

OEM & ODM Services for Distributors and Brands

If you are a distributor or retail dealer, you may want your own brand on the product. We support that.

OEM: You provide the specifications and drawings. We manufacture to your exact requirements. Your brand goes on the door, the packaging, and the documentation.

ODM: Our design team develops exclusive French door models for your brand. You get unique products that your competitors cannot source from us. This is a powerful differentiator in the retail market.

Private Label: We manufacture under your brand name, with your logo and packaging. This is standard for many of our retail dealer clients.

We handle packaging and shipping for glass doors with extra care. Our shipping damage protection covers the product until it reaches your warehouse. From our experience working with global clients, proper packaging is as important as proper manufacturing. A door that is perfect in our factory but arrives damaged is a failure.

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Manufacturing Quality: What to Look for in a French Door Supplier

Not all factories are equal. Here is what we look for when we evaluate a supplier — and what you should look for in us.

Wood Drying and Moisture Content Control

This is the foundation of everything. Wood that is not properly dried will move. It will warp, crack, and pull joints apart.

Our in-house wood drying workshop uses computerized kilns. We monitor moisture content throughout the drying cycle. Before machining, every board is tested. Wood destined for dry climates is dried to a lower moisture content than wood for humid climates.

Ask your supplier about their drying process. If they cannot answer in detail, walk away. We have seen this happen with clients who chose cheaper suppliers — they came back to us after the doors failed.

Precision Machining and Assembly Standards

French doors have complex joinery. The stiles and rails must fit together perfectly, or the door will rack (twist out of square).

We use CNC machining for consistent joinery and precise tolerances. The joints are mortise and tenon or doweled — never just nailed or screwed. Each joint is glued and clamped under pressure until the adhesive cures.

Our production team has over 20 years of experience in solid wood processing. They know how to handle different species, different cuts, and different moisture conditions. This experience is not something you can specify in a contract — it is something you have to trust.

Finishing Quality and Environmental Compliance

The finish protects the door and determines its appearance. A poor finish will fail within a year. A good finish lasts a decade.

We apply multiple layers using professional spray equipment. Each layer is sanded between coats to ensure adhesion and a smooth surface. The final coat is inspected under bright lighting for defects.

We comply with international standards for VOC emissions. Our finishes meet or exceed the requirements for the US, EU, and other major markets.

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Sourcing French Doors from China: What B2B Buyers Should Know

Importing from China can be a great deal — or a nightmare. The difference is the supplier and the process.

Lead Times, MOQs, and Production Planning

Our typical production lead time for custom French doors is 25–40 days, depending on complexity and order volume. Standard products are faster. Bulk orders for construction projects are planned in phases to match your installation schedule.

Our MOQ policy is flexible. We accommodate both project-specific quantities (even a single door) and bulk orders for large developments. The MOQ is more about production efficiency than a hard number. Talk to us about your project and we will find a way to make it work.

Communication is structured. You get regular production updates with milestone photos. You know when your doors are in the drying kiln, when they are being machined, and when they are being finished. No surprises.

Logistics, Packaging, and Damage Prevention

Export packaging for doors with glass requires specific care. We use:

• Heavy-duty cartons with corner protectors
• Edge protectors for all exposed edges
• Desiccant packs to control humidity in transit
• Fumigation-free wooden crates for large or fragile items

We ship FOB, CIF, or DDP, depending on your preference. We work with established freight forwarders and can consolidate shipments to reduce costs.

How to Evaluate a Manufacturer Before Committing

Do your due diligence. Here is what we recommend:

• Request samples — not just a photo, but an actual sample you can inspect
• Visit the factory — in person or virtually. We offer video tours of our workshops
• Review certifications — ask for quality documentation and compliance certificates
• Ask for client references — we are happy to connect you with existing clients in your region

We welcome your inquiry. Contact Our Team to discuss your project requirements. We will provide customized shop drawings within 24 hours.

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Frequently Asked Questions About French Doors

What is the difference between interior and exterior French doors in terms of construction?

Exterior doors require more robust weather sealing, multi-point locking, and appropriate glazing. The wood must be dried to a different moisture content, and the finish must withstand UV and moisture. In our factory, we treat these as separate product lines with different specifications.

Can you manufacture French doors to custom sizes?

Yes. All our French doors support custom sizing. Share your opening dimensions and our engineering team will provide shop drawings within 24 hours. We will flag any design issues before production.

What wood species do you recommend for French doors?

For interior: oak, walnut, mahogany. For exterior: engineered wood or aluminum-clad options for maximum stability. Our team provides species recommendations based on your project location and climate. A door for Florida needs different wood than a door for Minnesota.

What is your minimum order quantity (MOQ)?

Our MOQs are flexible. We accommodate both small project orders and large bulk supply for construction projects. The MOQ for standard products is lower than for fully custom designs.

Do you offer OEM and private label services?

Yes. We offer full OEM & ODM customization, including private label branding for distributors and retail dealers. This includes custom packaging, logo application, and documentation.

How do you ensure quality control during production?

We operate our own wood drying, spray finishing, and aluminum processing workshops. This means we control quality from raw materials to final production. We have multiple inspection checkpoints: at raw material intake, after machining, after finishing, and before packaging.

What is your typical production lead time?

Lead times vary by product complexity and order volume. Standard products ship in 20–25 days. Custom products take 25–40 days. Bulk orders are phased to match your construction schedule. We provide exact timelines when you submit your inquiry.

Do you provide installation instructions?

We provide detailed installation instructions with every order. For complex projects, our technical team is available for video consultations during installation.

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The Bottom Line on French Doors

French doors are a versatile architectural element. They work in traditional and contemporary settings. They solve the problem of bringing light and connection between spaces.

The choice between wood, aluminum, or hybrid comes down to the project requirements: the climate, the aesthetic, the maintenance expectations, and the budget.

If you are sourcing for a project, we invite you to work with us. We manufacture both wood and aluminum products under one roof. We control the entire process, from raw material to finished product. We have been doing this for over 20 years, and we have the client relationships to prove it.

We welcome global distributors, builders, architects, and project partners. Submit your inquiry today for a formal quotation and customized shop drawings within 24 hours.

Get a Free Custom Quote

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References

• Architectural Digest. “The History and Evolution of French Doors.” https://www.architecturaldigest.com/story/french-doors-history
• Wood Products Council. “Moisture Content and Wood Movement.” https://www.woodworks.org/wp-content/uploads/Wood-Design-File-Moisture-Content.pdf
• American Architectural Manufacturers Association. “AAMA Standards for Aluminum Doors and Windows.” https://www.aamanet.org
• Glass Association of North America. “Laminated Glass for Safety and Security.” https://www.glasswebsite.com
• National Wood Flooring Association. “Wood Species Guide for Interior Applications.” https://www.nwfa.org