Explore our certified commercial and residential entry door systems designed for extreme weather, acoustic performance, and advanced structural protection.
Established in 2014, Grandex Door Solutions Co., Ltd. is a premier entry door manufacturer operating from a modern 35,000 m² facility. With 16 years of deep industry expertise and 8 years of dedicated export experience, the company generates an annual export revenue of USD 28 million. Grounded in robust OEM and ODM trade backgrounds, our products primarily serve tier-one projects across North America and Western Europe, supported by an international network exceeding 1,200 supply chain partners.
Quality is integral to our operations: supported by strict ISO 9001-certified internal testing protocols and independent third-party laboratory verification, our 45-member Quality Assurance (QA) team enforces rigorous multi-stage quality control throughout production.
Driven by an active R&D division comprising 85 specialized engineers, we successfully introduced 120 new door designs last year alone. We offer comprehensive OEM/ODM custom solutions spanning custom dimensions, high-security multi-point locking systems, durable electro-galvanized surface finishes, and insulated decorative glass panels.
Navigating international building codes requires engineering precision. Our aluminum entry systems are tailored to meet stringent localized building directives worldwide.
Projects across coastal United States and hurricane-prone regions require compliance with Miami-Dade NOA (Notice of Acceptance) and Florida Building Code (FBC) standards. Our impact-resistant aluminum entry doors utilize laminated glass interlayers with structural silicone glazing, designed to withstand design pressures exceeding +70/-70 PSF and large missile impact tests.
Additionally, NFRC energy ratings guarantee thermal performance, lowering total building energy loads through low Solar Heat Gain Coefficients (SHGC) and low overall U-factors (≤ 0.22 BTU/h·ft²·°F).
European Union building regulations demand ultra-low thermal transmittance (U-values ≤ 0.8 W/m²K) to satisfy Near-Zero Energy Building (NZEB) and Passive House directives. Grandex incorporates technoform polyamide thermal breaks (PA66GF25) and triple-sealed perimeter gaskets.
Our European export line strictly adheres to EN 14351-1 standards for air permeability (Class 4), watertightness (Class 9A), and wind resistance (Class C5), ensuring long-term operational integrity in cold climate regions.
Australia and New Zealand architectures demand high resistance to marine corrosion and intense ultraviolet degradation. Certified under the Australian CodeMark schema and tested according to AS2047 / AS1170 standards, our coastal entry systems feature anodized treatments (25 microns+) or fluorocarbon (PVDF) coatings.
This structural approach guarantees resistance against salt spray corrosion, severe wind-driven rain, and bushfire attack levels (BAL-40 rating availability).
| Performance Standard | Testing Parameter / Code | Grandex Standard Specification | Target Market Application |
|---|---|---|---|
| Impact Resistance | ASTM E1886 / ASTM E1996 / TAS 201 | Large Missile Impact Level D (+70 PSF) | Florida, Caribbean, Coastal Commercial |
| Thermal Efficiency | NFRC 100/200 / ISO 10077-1 | U-Value: 0.18 - 0.24 BTU/h·ft²·°F | USA (Energy Star), EU Passive House |
| Acoustic Rating | ASTM E90 / ISO 140-3 | STC 42 - 45 dB (Double/Triple Glazed) | Urban Luxury Hotels & High-Density Condos |
| Structural Load | AS2047 / EN 12210 | Serviceability Pressure 3000 Pa+ | High-rise Residential & Coastal Villas |
| Surface Durability | AAMA 2605 / Qualicoat Class 3 | PVDF / Anodized (20-Year Non-Fading) | High-UV Middle East & Oceanfront Estates |
Our security doors integrate structural aircraft-grade aluminum extrusions, multi-point lock hardware, and precision thermal barriers.
We utilize prime 6063-T6 aluminum alloys characterized by exceptional tensile strength (minimum 215 MPa) and yield strength (minimum 170 MPa). Unlike standard recycled aluminum, our virgin billet extrusions offer superior structural rigidity against forced entry, wind load deflection, and hardware stress over decades of usage.
Thermal bridging is eliminated using multi-chambered Polyamide 66 reinforced with 25% glass fiber (PA66GF25). This configuration retains high mechanical stability under temperature fluctuations from -30°C to +80°C, drastically lowering HVAC thermal energy losses in both northern winters and hot desert climates.
Security is reinforced through European multi-point locking hardware systems featuring 3-point to 7-point gear locks, stainless steel deadbolts, anti-drill cylinders, and seamless integration with AI-powered biometric face recognition, RFID, and IoT smart home access control modules.
Inside Grandex's 35,000 m² automated manufacturing facility: Precision CNC machining, automated sorting lines, and rigorous internal quality verification.
Empowering real estate developers, architectural specifiers, and brand distributors with total design freedom and engineering control.
We produce extra-large entry systems spanning single swing, double French doors, pivot entry systems up to 4 meters high, multi-panel bi-fold assemblies, and ultra-slim sliding glass doors with concealed frames.
Select from over 200 RAL color shades in AkzoNobel powder coating, high-durability anodizing (natural silver, champagne, bronze, black), wood-grain heat transfer finishes, and fluorocarbon (PVDF) weather-resistant coatings.
Options include double/triple toughened safety glass, SentryGlas® (SGP) laminated hurricane glass, bullet-resistant composite glass, tinted heat-reflective glass, and smart electrochromic privacy glass.
Where artificial intelligence meets sustainable building physics: Key market drivers shaping 2025+ architectural door specifications.
Commercial and high-end residential properties are rapidly phasing out traditional mechanical keys. Modern entry doors now incorporate artificial intelligence facial recognition sensors, 3D structured light scanner units, dual camera video intercoms, and remote mobile cloud management directly built into the door stiles.
With strict net-zero carbon building targets globally, entry doors are no longer viewed merely as access points, but as critical components of the thermal envelope. The market is shifting toward ultra-insulating composite aluminum cores featuring aerogel insulation fills and structural thermal breaks.
Architectural trends demand ultra-slim sightlines without compromising wind-load resistance or safety. Advanced extrusion design and structural bonding adhesives allow heavy triple-glazed panels weighing up to 500 kg to glide effortlessly while offering zero-threshold transition options.
Complete project solutions including NFRC-certified vinyl systems, AI secret hinged doors, and custom architectural fixed glass.
Detailed answers to technical, logistics, compliance, and custom manufacturing queries from commercial buyers and distributors.
Our aluminum entry door systems are engineered and tested to satisfy major global standards. This includes North American NFRC thermal performance ratings and Florida Miami-Dade NOA hurricane impact compliance, Australian AS2047 and CodeMark approvals for coastal integrity, as well as European CE / EN 14351-1 certifications. Factory testing reports from independent accredited labs (SGS, TUV, Intertek) can be provided per project requirements.
We utilize high-grade Technoform Polyamide PA66GF25 thermal breaks that mechanically separate the exterior and interior aluminum profiles. Combined with multi-chamber structural designs, insulated core infills (foam/aerogel), and triple EPDM weatherstripping, our doors prevent condensation, reduce U-factors to as low as 0.18 BTU/h·ft²·°F, and withstand ambient temperature extremes between -30°C and +80°C.
Standard custom prototype drawings and CAD engineering approvals take 3 to 5 business days. Once shop drawings are confirmed, standard production lead times are 30 to 40 calendar days, depending on custom surface finishes (such as specialized PVDF or anodizing runs) and specialized glass procurement (e.g., SGP impact interlayers or bulletproof glass assemblies).
We offer multi-point locking systems sourced from premium European hardware partners (such as Siegenia, Hoppe, and Roto) as well as custom Grandex high-security gear locks. Options range from 3-point to 7-point locking bolts, motorized automatic locks, anti-snap cylinders, and AI-enabled biometric hardware (facial recognition, fingerprint, keypad, and IoT smart phone control).
Yes. We offer standard RAL architectural powder coatings (Qualicoat Class 2 & 3 certified), PVDF fluorocarbon coatings designed for intense UV exposures, and heavy anodizing up to 25 microns for marine/coastal projects. Our coastal treatments undergo rigorous ASTM B117 salt spray testing for over 3,000 hours without surface blistering or corrosion.
Our 45-member QA team executes a 6-stage inspection framework: Raw Material Verification, CNC Machining Precision Audit, Thermal Break Assembly Testing, Semi-Finished Product Inspection, Air/Water Tightness Chamber Testing on sample units, and Final Protective Packaging Audits. All doors are shipped in reinforced wooden crates with corner guards to prevent transit damage.
Grandex Door
