Heavy-Duty Thermal Break Aluminum Folding Door Systems
Grandor Door Industry Co., Ltd. manufactures commercial-grade thermal break aluminum folding doors (bi-fold patio doors) specifically designed to expand architectural openings into panoramic outdoor living spaces.
Engineered inside our 155,000 m² smart manufacturing plant in Foshan, Guangdong, every folding door system combines 6063-T6 architectural aluminum profiles, high-performance polyamide PA66 thermal barrier strips, double or triple Low-E insulated glass, and German-engineered heavy-duty multi-wheel rollers.
- Heavy-duty bottom-load carriage systems supporting panel weights up to 300kg per sash.
- Multi-point shoot-bolt locking mechanisms for maximum anti-burglary protection.
- EPDM continuous sealing gaskets offering top-tier wind load and water tightness.
- Customizable configurations (3+1, 5+1, 7+0 sashes) with ultra-slim profile sightlines.
Global Standards Compliance
All Grandor aluminum folding doors undergo rigorous structural, thermal, and mechanical durability testing to meet international market building codes.
Australia Certified
Europe Standard
Low U-Value Rating
Wind & Water Tested
PA66 Thermal Break
Polyamide barrier strips reduce heat transfer, lowering indoor HVAC energy consumption.
300KG Load Roller
Precision stainless steel bottom tracking ensures smooth, effortless gliding year after year.
Flush Threshold
Low-step barrier-free floor track options for seamless interior-exterior transit.
Custom Finishes
AkzoNobel powder coating, anodized, and realistic wood-grain surface options.
Architectural Aluminum Folding Door Series
Select from custom system profiles engineered for high-end residential villas, commercial storefronts, and coastal hospitality projects.
Grandor-FD88 Thermal Break Bi-Fold Door
Our flag-ship 88mm profile depth system designed for luxury residential patio openings requiring high thermal insulation and acoustic comfort.
- Frame Depth: 88 mm
- Profile Thickness: 2.0 mm wall
- Glass Package: 5mm+12Ar+5mm Low-E
- U-Value: Down to 1.6 W/m²K
Grandor-FD100 Heavy-Duty Commercial Folding Door
Reinforced 100mm heavy-duty profile system capable of supporting extra-large sash heights up to 4.0 meters for resort and showroom entrances.
- Frame Depth: 100 mm
- Profile Thickness: 2.5 - 3.0 mm
- Glass Package: 6mm+16Ar+6mm Laminated
- Max Sash Height: Up to 4000 mm
Grandor-FD75 Slim Sightline Folding Door
Minimalist profile design offering maximal glass surface area, ideal for modern architectural projects prioritizing panoramic views.
- Frame Depth: 75 mm
- Visible Stile: Ultra-narrow 110mm
- Glass Package: 5mm+14Ar+5mm Tempered
- Screen Option: Integrated Flyscreen
In-House Manufacturing Control from Extrusion to Crate
By performing raw profile extrusion, surface coating, glass tempering, and sash assembly under one roof, we eliminate subcontractor delays and maintain strict quality standards.
Raw Material Standards
Architectural 6063-T6 aluminum alloy profiles coupled with Technoform polyamide PA66 thermal barrier strips and primary EPDM weather seals.
CNC Machining Tolerances
Precision CNC miter cutting, corner crimping, and lock-pocket milling ensure watertight frame joints and zero sash sagging over time.
Project Customization
Engineered to exact architectural drawings, opening sizes, color schemes, low-threshold conditions, and hardware specifications for global projects.
Extrusion & Thermal Join
Aluminum profile extrusion and polyamide thermal strip insertion.
Surface Finishing
Automated powder coating and anodized finishing line.
Insulated Glass Assembly
Double/triple Low-E glass tempering and argon-filled sealing.
System Testing & Packing
Operational testing, corner inspection, and heavy wooden crating.
Frequently Asked Questions for Importers & Contractors
Technical answers directly from our engineering team regarding aluminum folding door specifications, shipping, and custom capabilities.
What maximum height and width can Grandor manufacture for folding doors?
Grandor manufactures custom aluminum folding doors with individual sash heights up to 4.0 meters and panel widths up to 1.2 meters. Total opening spans can extend up to 15+ meters across multiple folding configurations (e.g., 3+1, 5+1, 7+0).
How do Grandor thermal break folding doors perform under wind and rain conditions?
Our bi-fold doors utilize multi-layer continuous EPDM gaskets, concealed drainage channels, and polyamide PA66 thermal barrier strips, achieving high ratings in wind pressure resistance (ASTM E330), water tightness (ASTM E547), and air infiltration (ASTM E283).
What hardware and locking mechanisms are integrated into your bi-fold doors?
We integrate heavy-duty stainless steel carriage rollers rated for 100,000+ opening cycles, combined with multi-point shoot-bolt locking systems from top German and premium brand partners for maximum structural security.
Can Grandor supply certified folding door systems for Australian and North American markets?
Yes. Our aluminum folding door series comply with AS 2047, AS 1288, CE EN 14351-1, and NFRC energy performance standards, backed by full shop drawings and structural test documentation for project compliance.
Request Shop Drawings & Factory Direct Wholesale Pricing
Contact our project engineering team today with your door schedule, architectural drawings, or custom project specifications for a comprehensive technical quote.