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Title Hidden-rail window system for improved insulation performance
Attached File 2._Chapter_7(Sonusys).pdf  File Download Date 2019-05-20

◎ Hidden–rail window system–new technology that is a world first

By hiding the bottom rails using a rail cover to create a flat and uninterrupted bottom frame, the hidden-rail window system substantially improves all aspects of window performance including heat insulation, watertightness, airtightness, wind pressure resistance and condensation prevention, as well as its external appearance (design).

For more information, see the attached file.
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