Interior doors: sourcing from Vietnam and Mexico vs. buying domestic

Interior doors are a category where the distribution markup is consistently large and the product itself is straightforward to import. A solid core interior door that costs $95 to $140 FOB from a Vietnamese factory arrives at a US contractor's warehouse for $160 to $200 landed. The same door, sourced through a domestic distributor, typically runs $280 to $380 before installation. On a 60-unit multifamily project, that difference is $7,000 to $10,000 in material cost for a single product category.

The reason most contractors do not capture that savings is information. They do not know which countries produce quality interior doors, what the duty exposure looks like, or how to verify a factory across a 9,000-mile supply chain. This guide covers all three.

Who manufactures interior doors and where

The global interior door manufacturing industry is concentrated in four main regions: Vietnam, Mexico, China, and Italy. Each serves a different position in the quality and cost spectrum, and each has different duty implications for US buyers.

Vietnam has become the dominant source for mid-to-high-end solid core and engineered interior doors for the US market. Following the antidumping duties imposed on Chinese wooden furniture and some door categories, production shifted heavily to Vietnam throughout the 2010s. Vietnamese factories, particularly those clustered in Binh Duong province and Ho Chi Minh City, now operate with modern CNC equipment, consistent QC processes, and strong familiarity with US construction specifications (pre-hung, 6-8 foot height, standard 1-3/8 and 1-3/4 inch thickness).

Vietnamese interior doors do not carry the same broad AD/CVD exposure as furniture. However, duty classification matters. Interior doors are classified under HTS chapter 44 (wood products), and the specific rate depends on the construction (solid wood, engineered core, HDF/MDF) and how the door is presented (slab only, pre-hung, with or without glass lights). A licensed customs broker should confirm the applicable rate before you commit to a large order.

Mexico occupies a different position: shorter lead times and USMCA trade benefits rather than lowest FOB price. Large door manufacturers in Monterrey and Juarez produce primarily MDF core and HDF core doors with wood face veneer, engineered to US rough opening standards. The USMCA agreement eliminates the standard import duty on qualifying Mexican goods, and truck freight from Monterrey to Miami runs 3 to 4 days rather than 28 to 35 days by ocean. For projects with tight timelines or where the spec lends itself to standard sizes, Mexico offers the best combination of cost, speed, and duty exposure.

China produced the largest volume of interior doors globally but has seen significant shifts in US purchasing due to AD/CVD exposure on wooden bedroom furniture (which shares production lines with interior doors at many factories) and Section 301 tariffs on broader categories of Chinese goods. Chinese door factories are still competitive for certain product types and price points, but the duty analysis must be done carefully before making a sourcing decision.

Italy produces the premium tier: solid hardwood doors with integrated hardware, architectural panel profiles, and full customization down to individual project specifications. Italian door manufacturers like Bertolotto, Barausse, and dozens of smaller producers serve the luxury residential and boutique hospitality market. FOB prices reflect it, typically $400 to $1,200 per door unit before freight and duties. For the right project, the premium is justified; for mid-range residential, it is not.

What a landed cost breakdown actually looks like

The goal of a landed cost exercise is to know your true per-unit cost before you compare sourcing options. Here is a realistic breakdown for 100 interior doors from Vietnam versus 100 from Mexico:

Vietnam (100 solid core doors, 32x80, pre-hung, painted MDF):

• Factory price (FOB Ho Chi Minh City): $120/door = $12,000
• Ocean freight (HCMC to Miami): $3,200 (20ft container)
• Marine insurance (1.1%): $168
• Import duty (3.2% HTS 4418.20): $458
• Customs entry + ISF filing: $650
• Drayage + warehouse: $500
• Total landed: $16,976 / 100 doors = $169.76/door

Mexico (100 hollow core doors, 32x80, pre-hung, MDF with birch veneer):

• Factory price (EXW Monterrey): $88/door = $8,800
• Inland freight to border + US delivery (truck to Miami): $2,100
• USMCA certificate (standard duty eliminated): $0
• Customs entry: $350
• Total landed: $11,250 / 100 doors = $112.50/door

The two products are not directly equivalent: the Vietnamese door is solid core (heavier, better soundproofing, more suitable for higher-end residential), while the Mexican door is hollow core (lighter, standard residential use). But the exercise illustrates how origin, duty treatment, and freight mode all compound in the landed cost calculation.

A domestic distributor's price for a comparable solid core pre-hung door in a painted finish typically runs $280 to $350 per unit at contractor pricing. The $170 landed cost from Vietnam represents a 40 to 50 percent reduction.

Wood species and construction types: what the spec actually means

Interior door specifications in the US market center on three variables: core construction, face material, and wood species (if solid or veneered). Understanding these helps you evaluate factory quotes accurately.

Core construction determines weight, soundproofing, and dimensional stability:

A solid wood core is made from finger-jointed or laminated solid wood throughout. Maximum soundproofing and weight. Best for high-end residential and any application where acoustic performance matters. Higher cost.

A solid composite core (also called particleboard core or agricultural board core) fills the door with a dense particleboard or agricultural fiber composite. Nearly as heavy as solid wood, good dimensional stability, lower cost. Common in mid-range residential and multifamily.

An HDF (high-density fiberboard) core provides good density and very flat, stable surfaces. Widely used in Vietnamese and Mexican production. Accepts paint and veneer well. Suitable for standard residential interior applications.

A hollow core door uses a honeycomb or ladder internal structure with a thin MDF or hardboard skin. Lightest and cheapest option. Appropriate for closets, pantries, and low-traffic interior applications. Not suitable where any soundproofing is required.

Face material determines the visual finish and the finishing options available:

• Solid wood face: real wood, shows natural grain, can be stained or painted, highest cost
• Real wood veneer: thin slice of real wood over MDF or composite core, good grain appearance, stable
• Primed MDF face: smooth, perfect for paint finish, no visible grain, cost-effective for painted interiors
• Laminate face: factory-applied finish (white, wood-tone, or pattern), no field finishing required, durable

For a painted-finish multi-unit project, primed MDF face over solid composite or HDF core is almost always the value choice. For stained wood or natural finish applications, real wood veneer over a stable core is the appropriate spec.

Antidumping risk: what to verify before you order

The antidumping and countervailing duty landscape for wood products from Vietnam and China is active. The US Department of Commerce and the International Trade Commission periodically investigate categories of imported wood goods, and when duties are imposed, they can apply retroactively to goods already in transit.

For interior doors specifically, the risk profile varies by product type and how it is classified at the HTS code level. Before committing to a large international door order:

Confirm the HTS code with your customs broker for the specific door construction you are ordering. Interior wood doors fall under HTS 4418 (builders' joinery and carpentry of wood), with sub-classifications based on construction and whether glass is included.

Check the current AD/CVD order list at the USITC and CBP websites, or ask your customs broker to confirm whether any existing orders apply to the HTS code and country of origin for your order.

Verify the factory's export certificate. In Vietnam, look for C/O Form B (ASEAN certificate of origin) or Form E for goods qualifying under ASEAN agreements. More importantly, verify that the factory's goods genuinely originate in Vietnam and are not transshipped from China (a practice the CBP actively investigates under antidumping enforcement).

Get written confirmation from your intermediary or factory on duty treatment before you finalize the purchase agreement. If a factory cannot or will not provide documentation supporting their duty classification, treat that as a red flag.

Lead times: planning for an international door order

The biggest operational challenge in international door sourcing is lead time management. Unlike tile or countertop slabs, doors are a finish item that cannot be installed until the framing, drywall, and rough-in work is complete. But they need to be ordered before that work begins, because the production and shipping timeline is long.

A realistic timeline for an overseas door order:

1. Specification confirmation and factory selection: 1 to 2 weeks
2. Sample approval (if custom spec): 2 to 3 weeks (factory produces samples, ships for approval)
3. Purchase agreement and deposit: 3 to 5 days
4. Production: 6 to 10 weeks for custom; 3 to 6 weeks for standard catalog sizes
5. Pre-shipment inspection: 3 to 5 days
6. Ocean freight (Vietnam to Miami): 28 to 35 days
7. Customs clearance: 3 to 7 days after arrival
8. Drayage and delivery: 2 to 5 days

Total: 14 to 20 weeks from confirmed order to on-site delivery for a custom Vietnamese order. For Mexican truck freight on standard sizes, that compresses to 8 to 12 weeks.

The implication for project planning: door orders need to go out when the project is at permit or early framing, not when rough-in is complete.

Verifying an overseas door factory

The verification process for door factories follows the same framework as any construction material supplier, with a few door-specific considerations:

CARB compliance. California Air Resources Board (CARB) regulates formaldehyde emissions from composite wood products. Even if your project is not in California, major US general contractors and developers increasingly require CARB Phase 2 compliance for all composite wood components including MDF core doors. Request the CARB compliance certificate and verify it against the CARB ATCM database.

TSCA Title VI. The federal Toxic Substances Control Act Title VI establishes formaldehyde emission standards for composite wood products sold in the US. As of 2019, all composite wood used in US construction must meet TSCA Title VI standards. Request documentation that your door's core material complies.

FSC or PEFC certification (optional but increasingly specified). Forest Stewardship Council or Programme for the Endorsement of Forest Certification confirms sustainable sourcing of the wood fiber. Required by some LEED projects and increasingly by larger developer clients.

Production line inspection. For a first-time factory relationship, commission a pre-shipment inspection from a third-party firm (SGS, Bureau Veritas, Intertek) that physically verifies door count, dimensions, finish quality, and packaging integrity before the container is loaded.

When to source internationally vs. buy domestic

Direct international sourcing makes sense for interior doors when:

• The project has 50 or more door units with consistent specs
• Timeline allows for 12 to 16 weeks procurement lead time
• Spec calls for custom sizing, species, or finish not available from domestic stock
• Project is in a market where labor cost (not material cost) drives the margin

Domestic sourcing makes more sense when:

• Order is under 30 units
• Timeline is under 6 weeks
• Spec is highly variable across units (different sizes, finishes, hardware preps)
• Project requires fast replacement availability during construction

For developers running standardized multi-unit projects (BTR communities, multifamily, student housing), international sourcing almost always wins on doors once the procurement process is established. The savings on a 200-unit project at $100 per door difference is $20,000 in material cost on a single line item.

What to include in your door sourcing inquiry

To get a usable quote, provide:

• Door type: interior slab, pre-hung, sliding barn, bifold, French
• Core construction: solid wood, solid composite, HDF, hollow core
• Face material: solid wood species (if applicable), veneer, primed MDF, laminate
• Dimensions: rough opening width and height, or exact door dimensions
• Swing: inswing or outswing, hand (left or right)
• Hardware prep: bore hole location, hinge prep, lockset prep
• Finish requirement: unfinished, primed, paint-ready, factory-painted
• Quantity
• Delivery destination and target on-site date
• Any required certifications: CARB, TSCA, FSC

With a complete specification package, a sourcing intermediary can return factory options with FOB pricing and full landed cost within 3 to 5 business days.

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Nexo sources wholesale interior doors from verified factories in Vietnam, Mexico, and Italy for US contractors and developers. Every quote includes full landed cost and current duty analysis. Request a door sourcing quote.