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Fortress Windows
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| GPN70X-Thermal Break Aluminum Slim Frame Window | |
| Material | Aluminum Alloy |
| Surface Treatment | Austria Tiger Powder Coating |
| Characteristic | Seamless Welding / Heat Insulation / Soundproof |
| Warranty | More Than 5 Years |
| Glass Type | Double Tempered Impact Glazing + Argon Filling |
| Opening Method | Fixed |
Experience the superb pressure resistance brought by the seamless welding process. Our products are designed to improve quality of life with superior durability.
With over 20 years of experience in door and window R&D, our production base features advanced technology including automated spraying lines and overall coating systems. We utilize global high-quality wood and hardware accessories to ensure stable, reliable, and cost-effective products.
Our commitment to quality is recognized through various industry certifications such as NFRC, CSA, IF, and Red Dot awards.





