The latest dovetail slot buckle connection reduces the damage caused to the doors and windows by the internal stress of the two.
The thickness of the material is 75mm, the shape is meticulous and the structure is perfect.
The glass and wooden frame are equipped with high-quality rubber seals with good elasticity and weather resistance, which greatly improves the air tightness and water tightness of doors and windows.
High-density connection drainage board design, while protecting the frame, makes the drainage system more smooth. The externally insulated aluminum alloy effectively protects the wood and prevents the wood from being easily corroded.
Airtightness: Graded index value per unit length q≤0.5m3 / （m? H）, or graded index value per unit area q≤1.5m3 / （m2? H） Level 8
Water tightness: 500≤ △ P ＜ 700Pa 5
Insulation performance: 1.8≤K≤2.0 W / （m2? K） Class 7
Sound insulation performance: 35≤Rw + Ctr ＜ 40 dB Level 4
Wind pressure resistance: 4.5≤P3 ＜ 5.0 Kpa 8