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0.39” ultra-slim inner frame
Triple sealing system effectively blocks outdoor wind and rain
Quick-release safety rail design
Easy to remove and reinstall
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Aluminum
0.07” Thickness thermal break aluminum
Frame Width
4.25”
Insulation Strip
Utai thermal insulation strips (15/16”)
Sealing Strip
Meide foam-composite EPDM strips
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Xingsanxing outward-opening window hardware
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3/16-5/8”-3/16”
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Heat Insulation
2.0W/m²K
Sound Insulation
35dB
Water Tightness
700Pa
Air Tightness
1.5m³/(m²*h)
Wind Resistance
3.0Kpa