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· 120mm Heavy-Duty Frame: 120mm sash thickness ensures high strength, deformation resistance, and superior load-bearing capacity.

· Heavy-Gauge Construction: 2.0mm profile wall thickness supports heavy loads and meets Grade 9 of the National Wind Pressure Resistance Standard.

· Multi-Chamber Reinforcement: Features a robust five-chamber structure that reduces air convection within the cavity, enhancing both sound and thermal insulation.

· Dual Thermal Break Design: Effectively minimizes heat transfer from the outdoor environment.

· Triple Step Sealing: Multi-layered compression seals create multiple barriers, significantly improving airtightness.

· Separated Vertical Thermal Break: The PA66 thermal strips are aligned on the same vertical plane, maintaining an isothermal separation for maximum efficiency.

· Sleek Narrow Frame: The slim profile design enhances aesthetic appeal and maximizes natural light intake by increasing the indoor viewing area.

· Tool-Free Screen: Upgraded screen with a "one-touch" release mechanism for easy removal and cleaning.

· 10-Year Warranty: Patented hardware backed by a 10-year quality guarantee, keeping your home looking pristine for a decade.