Double Front Entrance Doors Factory Direct Supply Guide for B2B Buyers

15 min read

The contractor in Toronto has been burned before by a supplier who promised 45 days and delivered in 90, with the wrong hardware finish and missing test certificates. That is the reality of sourcing double front entrance doors internationally. The product is not exotic. The challenge is finding a supply chain that delivers what it promises, when it promises, and with the paperwork to prove it meets local codes.

This guide covers the technical specifications that matter, the performance standards you should verify, and the supplier evaluation framework that separates reliable factories from trading companies with a website.

1. Understanding Double Front Entrance Doors: Types and Configurations

Double front entrance doors are two independently operating door leaves within a single frame system, designed to create a wider opening than a single door. They serve both functional and aesthetic purposes — allowing furniture and equipment to pass through while presenting a symmetrical, monumental entry.

1.1 Common Configurations

The most frequently specified configurations include:

• French double doors — two hinged leaves, available in in-swing or out-swing orientations. In-swing is common in North America; out-swing dominates in European and Asian markets due to weather sealing advantages.
• Double doors with sidelites — fixed glazed panels flanking one or both sides, increasing daylight penetration and visual width without expanding the actual opening.
• Double doors with transoms — a horizontal glazed or solid panel above the door, often used in entryways with higher ceiling clearances.
• Commercial double doors with panic hardware — push bars or touch bars that release both leaves simultaneously, required for egress in many commercial buildings.
• Multi-point locking double doors — locking mechanisms that engage at multiple points along the door edge (typically 3 to 5 points per leaf), improving security and weather sealing.

1.2 Material Categories and Positioning

Material selection drives both performance and price. Each category occupies a distinct market position:

Material	Typical Application	U-Value Range (W/m²K)	Relative Cost
Solid wood	Luxury villas, heritage renovations	1.8 – 2.5	High
Aluminum (thermal break)	Commercial, modern residential	1.1 – 2.0	Medium-High
Steel	Security-focused, institutional	1.8 – 2.7	Medium
Aluminum-clad wood	Premium residential, cold climates	0.9 – 1.5	Highest

Aluminum with thermal break has become the default choice in the 2024–2025 construction cycle. Its strength-to-weight ratio allows slim sightlines (as narrow as 40–50 mm visible frame width), while the polyamide thermal break strips interrupt the cold bridge between interior and exterior faces.

1.3 Glass and Hardware That Define Performance

The door leaf is only part of the system. The glazing package and hardware determine real-world performance:

• Glazing: Double glazing (two panes with argon fill) is the minimum for most climate zones. Triple glazing is specified in passive-house projects. Low-E coatings reflect infrared radiation. Tempered or laminated safety glass is mandatory in most commercial applications.
• Hardware: Multi-point locks with anti-lift pins, concealed hinges rated for 100,000+ cycles, floor springs for heavy commercial leaves, electromagnetic locks for access-control integration.
• Finishes: Powder coating (RAL colors) is the most common for aluminum. Anodizing offers better abrasion resistance. PVDF (fluoropolymer) coatings provide superior UV stability for coastal environments.

2. Quality and Performance Factors: What Determines a Good Double Front Entrance Door

The quality of a double front entrance door is not visible in a photograph. It is measurable in test reports — air tightness, water tightness, wind load resistance, and thermal transmittance. These four parameters define whether the door will perform for 15 years or fail in the first winter.

2.1 The Four Performance Pillars

Air-tightness measures the volume of air leaking through the closed door assembly under a given pressure differential. Standards like EN 12207 classify air permeability from Class 1 (highest leakage) to Class 4 (lowest). For double front entrance doors in exposed locations, Class 3 or 4 is recommended.

Water-tightness tests the door’s resistance to water penetration under simulated rain and wind pressure (EN 12208, classes 1A to 9A). A double entrance door facing the prevailing wind in a coastal area should achieve Class 7A or higher. This is where many budget suppliers fail — the gasket system and drainage channels are insufficient.

Wind load resistance verifies structural integrity under wind pressure (EN 12211). The door frame must not deflect beyond acceptable limits. For high-rise buildings (above 10 stories) or hurricane-prone regions, this becomes a critical safety parameter.

Thermal transmittance (U-value) measures heat loss through the entire door assembly — frame, panels, and glazing combined. A good thermal-break aluminum double door achieves 1.5 W/m²K or lower. Passive-house projects require 0.8 W/m²K, which typically demands triple glazing and wider thermal break strips.

2.2 Structural Components That Matter

The performance of a double front entrance door is determined by components you cannot see once installed:

• Profile wall thickness: For aluminum entrance doors, the main frame profile wall thickness should be 1.4–2.0 mm. Thinner profiles (1.2 mm or less) are used for interior doors and will not withstand exterior conditions.
• Thermal break material: Polyamide PA66 GF25 (glass-fiber reinforced) is the industry standard. Some budget manufacturers use PVC thermal breaks, which have lower structural strength and expand more under temperature changes. Break widths of 24–34 mm are typical for entrance doors.
• Gasket systems: EPDM (ethylene propylene diene monomer) gaskets are the most durable for exterior doors. Silicone has better high-temperature resistance but is more expensive. Multi-chamber sealing — three or more gasket layers — reduces air and water infiltration significantly.
• Reinforced cores: Large double door panels (over 1200 mm per leaf) require steel or aluminum reinforcement inside the frame profiles to prevent sagging and torsional deformation.

2.3 Building Code Compliance by Region

Double front entrance doors must comply with local building codes, which vary significantly by market:

• United States: ADA requires a minimum 32-inch (813 mm) clear passage width for accessible routes. This means the door leaf must be wider than 32 inches to account for hardware protrusions. IECC (International Energy Conservation Code) sets U-value requirements based on climate zone — Zone 4 requires 0.35 or lower for doors.
• European Union: EPBD (Energy Performance of Buildings Directive) drives thermal requirements. EN 14351-1 is the harmonized product standard for windows and pedestrian doors, covering CE marking requirements.
• United Kingdom: Part M of the Building Regulations addresses accessibility; Part L covers conservation of fuel and power. The DDA (Disability Discrimination Act) sets clear width requirements of 800 mm minimum.
• China (export reference): GB/T 7106 covers air permeability, water tightness, and wind load resistance — the testing basis for many Chinese factories’ QC reports.

Fire-rated double doors (60 or 90 minutes) are required in certain commercial applications — stairwell enclosures, boiler rooms, and some building separation walls. Fire-rated doors are not simply thicker slabs. The frame, seals, intumescent strips, and hardware must all be rated as a complete assembly.

3. Production Process: From Raw Material to Finished Door

Understanding the manufacturing process helps buyers evaluate suppliers and identify where quality is added — or lost.

3.1 Profile Production and Surface Treatment

The process begins with aluminum billets (typically 6063-T5 or 6063-T6 alloy). The billets are heated to approximately 500°C and extruded through dies to create the profile cross-section. After extrusion, profiles undergo aging (heat treatment) to achieve the required mechanical strength.

Surface treatment follows one of two routes:

• Anodizing: The profile is immersed in an acid electrolyte bath and subjected to an electrical current, creating a protective oxide layer. Thickness ranges from 10–25 microns. Anodized finishes are hard but offer limited color options (bronze, black, silver).
• Powder coating: Electrostatically applied dry powder is cured at 180–200°C, forming a durable coating 60–120 microns thick. Any RAL color is possible. This is the more common choice for entrance doors.

3.2 Fabrication and Assembly

Fabrication involves cutting profiles to length, CNC machining of drainage slots and hardware cutouts, and drilling screw holes. This is where precision matters — a poorly machined drainage slot will cause water to pool inside the frame, leading to premature gasket failure.

Assembly includes fitting the thermal break strips (inserted between the outer and inner aluminum profiles), installing gaskets, and joining frame corners. Corner joints are either crimped (pressure-assembled) or welded. Crimped corners are standard for aluminum; welded corners are used for steel frames.

Glass fabrication is typically outsourced to specialized glass processors. The insulating glass unit (IGU) consists of two or three panes, separated by a spacer bar, sealed with butyl and structural silicone, and filled with argon or krypton gas.

3.3 Hardware Installation and Final Assembly

Hardware installation is the final production step. Multi-point locks, hinges, and handles are mounted and adjusted. The door leaves are hung, alignment is checked, and the closing force is tested.

At this stage, the finished doors are subject to a final inspection — checking profile straightness, hardware function, gasket continuity, and visual appearance. Only then is the door packaged for shipment.

4. How to Evaluate Double Front Entrance Doors Suppliers

Not every supplier who quotes on double front entrance doors is a manufacturer. Many are trading companies that source from multiple factories and add a markup. The evaluation framework below helps buyers distinguish between the two.

4.1 Factory vs. Trading Company: Key Differences

Evaluation Criterion	Factory (Direct)	Trading Company
Pricing	Factory cost + margin (typically 10–15%)	Factory cost + trader margin (20–30% total)
Quality control	In-house testing possible	Dependent on factory QC
Customization	Direct communication with engineers	Relayed through trader
Lead time control	Transparent production schedule	Dependent on factory schedule
Accountability	Single point of responsibility	Split responsibility (trader + factory)

The pricing difference is measurable. A trading company’s quote typically includes a 10–20% markup over the factory price. For a container order worth $40,000–60,000, that is $4,000–12,000 in additional cost — without any added value.

4.2 Questions to Ask Before Ordering

Send the following questions to any shortlisted supplier:

• What is your monthly production capacity for double entrance doors?
• Can you provide test reports for air tightness, water tightness, and wind load resistance from a third-party laboratory?
• What profile wall thickness do you use for entrance door frames?
• What is the thermal break material and width?
• Can you provide references from similar projects in my target market?
• What is your standard packaging specification for export?
• What documentation do you provide for customs clearance?

4.3 Red Flags: Avoid Suppliers Who…

• Cannot provide third-party test reports. If the only quality evidence is verbal assurance, walk away.
• Quote prices significantly below the market average. A quote 20% lower than competitors usually means thinner profiles, lower-grade aluminum, or inferior hardware.
• Have no physical factory address or refuse video walkthroughs. A legitimate manufacturer will show you the production line.
• Cannot explain their production process in technical detail. If the salesperson cannot describe how the thermal break is inserted, they do not understand the product.
• Offer every material and every product type. Specialization matters — a factory that produces both $50 steel doors and $500 aluminum doors may not have the right production line for either.

5. Key Quality Indicators and Industry Standards

5.1 Standards That Matter

Buyers specifying double front entrance doors should be familiar with the following standards:

Standard	Scope	Key Parameter
EN 12207	Air permeability	Classes 1–4 (higher is better)
EN 12208	Water tightness	Classes 1A–9A
EN 12211	Wind load resistance	Class based on deflection
EN ISO 10077-1	Thermal transmittance calculation	U-value (W/m²K)
EN 14351-1	Product standard for windows and doors	CE marking basis
ISO 9001:2015	Quality management system	Factory certification
GB/T 7106	Chinese standard for air, water, wind	Export reference

5.2 What Third-Party Test Reports Should Show

When a supplier provides test reports, verify the following:

• The testing laboratory is accredited (e.g., notified body for CE marking, or an ISO 17025 accredited laboratory).
• The test sample matches your specification (same profile system, same glazing package, same hardware).
• The test date is within the last 3 years. Standards change, and older test reports may not reflect current production quality.

6. Customization and OEM/ODM Options

Double front entrance doors are rarely off-the-shelf products. Most B2B buyers require some level of customization — even if it is only a specific RAL color or a different glazing package.

6.1 What Can Be Customized

A capable manufacturer can customize:

• Dimensions: Non-standard widths and heights, oversized leaves for special openings
• Profile color: Any RAL color, dual-color options (different interior/exterior finishes), wood-grain foil finishes
• Glass: Tinted, low-E, reflective, laminated, tempered, triple glazing, decorative muntins
• Hardware: Brand (Roto, Siegenia, Hoppe, or domestic brands), finish (silver, black, gold, brass), style (modern, classic)
• Configuration: Sidelites, transoms, fixed panels, split configurations

6.2 OEM vs. ODM vs. Private Label

Mode	Definition	Buyer Provides	Factory Provides
OEM	Manufacturing to buyer’s specification	Drawings, hardware specs, performance targets	Production, assembly, testing
ODM	Design development	Functional requirements, aesthetic direction	Engineering design, prototyping, production
Private Label	Branding of factory product	Logo, packaging design, brand name	Manufacturing with buyer’s branding applied

For double front entrance doors, OEM is the most common mode. The buyer specifies the profile system (either their own or a licensed system), hardware, and performance requirements. The factory manufactures to those specifications.

7. Ordering Process: MOQ, Lead Time, and Shipping

7.1 MOQ (Minimum Order Quantity)

MOQ varies by configuration and factory:

• Standard aluminum double doors: 50–100 units is typical for OEM production
• Fully custom designs: MOQ may be 100+ units, depending on the level of customization
• Stock items: Some factories offer lower MOQs (10–20 units) for standard sizes and finishes

A lower per-unit cost is achievable with larger order quantities. The price difference between 50 and 200 units is typically 5–10%.

7.2 Lead Time

Realistic lead times for double front entrance doors:

• Sample production: 15–25 days (including design confirmation and prototyping)
• Bulk production: 30–45 days after sample approval
• Factors that extend lead time: Custom glass orders (10–15 additional days), imported hardware (7–14 days), peak season (Q3–Q4 adds 10–15 days)

7.3 Shipping Options

Option	Best For	Cost Profile
FCL (Full Container Load)	Orders above 20 units	Lowest per-unit freight cost
LCL (Less than Container Load)	Smaller orders	Higher per-unit cost, more handling
Air freight	Samples, urgent orders	Highest cost, fastest delivery

A 40ft container holds approximately 30–40 double entrance doors, depending on door size and packaging density. FCL is recommended for orders above 20 units to optimize freight costs.

7.4 Export Documentation

Standard export documentation includes:

• Commercial invoice
• Packing list
• Bill of lading (or air waybill)
• Certificate of origin
• Customs declaration

Depending on the destination country, additional documentation may be required — CE declarations for EU markets, ASTM test reports for the US, or specific certification for Middle Eastern markets.

8. How We Meet These Standards: Jusen Door and Windows Manufacturing Co., Ltd.

The procurement frameworks above describe what buyers should look for in a double front entrance door supplier. As a manufacturer, our approach to these requirements is straightforward: we meet the standards we have described, and we document the evidence.

8.1 Factory-Direct Supply with Full Customization

Our production line covers solid wood doors, thermal-break aluminum doors and windows, system windows, and aluminum alloy entrance doors. For double front entrance doors, we execute OEM and ODM projects with full customization on size, color, glass type, and hardware accessories. Direct supply from our factory means no middleman markup — the price you receive is the production cost plus our margin, not a trading company’s inflated quote.

8.2 Quality Verification Before Shipment

Every double front entrance door order undergoes pre-shipment inspection covering air-tightness, water-tightness, and wind resistance testing. Our quality assurance process is designed to align with the performance classes discussed in Section 2. What this means for buyers is documented verification — test reports you can present to your client or building inspector — rather than verbal assurances.

8.3 Export Experience and Compliance Support

With established foreign trade experience, we provide complete documentation — packing lists, proforma invoices, and full customs paperwork — to support smooth import clearance. Our adjustable profile structures and fittings are engineered to accommodate local building codes across different target markets, reducing the risk of on-site rejection. If your project requires specific certifications, we can provide the supporting documentation or coordinate third-party testing.

8.4 Flexible Logistics for Projects of Any Scale

We ship via both FCL and LCL directly from our China factory. This allows distributors and contractors to match freight costs to project phases. For a 40ft container of standard aluminum double front entrance doors, production typically takes 30–40 days after sample approval. Custom glass orders or specialized hardware may extend this to 45–55 days.

One project we completed recently illustrates this capability. A developer in the UAE ordered 120 units of thermal-break aluminum double entrance doors for a villa compound. The order included custom RAL 9005 black finish, triple glazing with solar control coating, and multi-point locking hardware. Total production time was 38 days from sample approval. All units passed the pre-shipment inspection for air and water tightness, and delivery was made in two FCL shipments spaced three weeks apart to match the construction schedule.

8.5 How a Buyer Works With Us

The process is structured to minimize friction:

• Inquiry — Send your specifications, drawings, or performance requirements.
• Quotation — We respond within 2–3 working days with pricing and technical feedback.
• Sample — Production samples are manufactured and shipped for approval (15–25 days).
• Bulk production — After sample approval, production runs 30–45 days.
• Pre-shipment inspection — We provide test reports and photos/videos of finished goods.
• Shipping — FCL or LCL from our factory, with full export documentation.

9. Procurement Checklist and Decision Guide

9.1 Five-Point Checklist Before You Send an RFQ

• Define your performance class requirements (air, water, wind load) based on your project location and building height.
• Specify thermal performance targets (U-value) based on your climate zone and energy code requirements.
• Confirm building code requirements (egress, accessibility, fire rating) with your local authority.
• Determine customization scope (size, color, glass, hardware) — the more specific your RFQ, the more accurate your quotes.
• Decide on logistics terms (FOB, CIF, DDP) and order phasing — this affects both pricing and delivery scheduling.

9.2 What to Include in Your Inquiry for Faster Quoting

• Project type and location (for code compliance assessment)
• Door dimensions and swing direction
• Material preference (aluminum, wood, hybrid)
• Glazing specification (double/triple, low-E, safety glass)
• Hardware requirements (brand, finish, locking system)
• Quantity and target delivery timeline
• Any certifications or test reports required

9.3 Choose A If… Choose B If…

Choose a factory-direct manufacturer if:

• Your order volume is above 50 units
• You require custom specifications
• You want control over the production process
• You need documented test reports for compliance

Choose a trading company if:

• Your order is very small (below MOQ)
• You need a single supplier for multiple product categories from different factories
• You already have an established relationship with a trader you trust

Choose aluminum double doors if:

• You need slim sightlines for modern architecture
• The project is in a coastal or high-humidity environment
• You require low maintenance over the building lifetime

Choose wood double doors if:

• The project is high-end residential with a traditional aesthetic
• The building has acoustic requirements that wood handles well
• The client values natural material appearance over maintenance convenience

9.4 Questions to Ask Before Ordering

• Can you provide third-party test reports for the specific profile system you are quoting?
• What is the profile wall thickness and thermal break width?
• What brand of hardware is included in the quote?
• What is the warranty period and what does it cover?
• Can you provide references from projects in my market?

Double front entrance doors are a significant investment — structurally, aesthetically, and commercially. Understanding product categories, performance standards, and supply chain dynamics is the foundation of a successful procurement strategy. When you work with a factory-direct manufacturer that offers full customization, documented quality assurance, and export-ready logistics, you reduce project risk and improve margin predictability.

If you are planning a project that requires double front entrance doors, send us your specifications for a detailed quotation.

Get a Free Quote

—

References

• EN 12207:2017. Windows and doors — Air permeability — Classification. European Committee for Standardization. https://www.en-standard.eu/
• EN 12208:2000. Windows and doors — Water tightness — Classification. European Committee for Standardization. https://www.en-standard.eu/
• EN 12211:2016. Windows and doors — Resistance to wind load — Classification. European Committee for Standardization. https://www.en-standard.eu/
• EN ISO 10077-1:2017. Thermal performance of windows, doors and shutters — Calculation of thermal transmittance. https://www.iso.org/standard/69675.html
• EN 14351-1:2006+A2:2016. Windows and doors — Product standard, performance characteristics. https://www.en-standard.eu/
• International Energy Conservation Code (IECC) 2021. International Code Council. https://www.iccsafe.org/
• GB/T 7106-2019. Graduation of air permeability, water tightness and wind load resistance performance of building exterior windows and doors. Standardization Administration of China. https://www.sac.gov.cn/
• ISO 9001:2015. Quality management systems — Requirements. International Organization for Standardization. https://www.iso.org/standard/62085.html
• Americans with Disabilities Act (ADA) Standards for Accessible Design. U.S. Department of Justice. https://www.ada.gov/
• The Building Regulations 2010 — Part M (Access to and use of buildings). UK Government. https://www.gov.uk/