| Customization: | Available |
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| After-sales Service: | Good After Sales Service |
| Warranty: | 1 Year |
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The 90 series products are positioned as high-end energy-saving passive windows and obtained passive door and window certification from the PHI Research Institute in Germany in 2019
1. The visible wall thickness is 3.0mm, the non visible wall thickness is 2.7mm, and the reinforced steel is hot-dip galvanized with a thickness of 2.0mm. Seven chamber structure, thermal insulation and energy-saving, with performance reaching national standard level 10.
2. Can install 42mm and 59mm glass, meeting the requirements of high insulation windows for glass; The number of heat transfer systems can be as low as 0.7-0.8W/mk if three layers of glass are used together.
3. The flat open fan is a luxury fan with a goose head. After the melting of rain and snow in the Northeast region, the problem of ordinary fan adhesive strips freezing due to lower temperatures, causing windows to be unable to open or the adhesive strips to be pulled out when opened, has been solved. However, luxury fan rainwater can directly flow out along the window frame, which can completely solve this problem.
4. The Gaoke 90 flat open three seal series can achieve soft sealing (large rubber strip structure), and customized large rubber strips provide better sealing effect.
5. The frame, fan, and support strip of the series are universal.
6. The internal 13 series hardware configuration is convenient for selection and assembly.
| Cross section | 90mm |
| Visible wall thickness | 3.0 mm |
| Non visible wall thickness | 2.7 mm |
| Steel Liner | 2.0 mm |
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