Wind pressure resistance: 3,500Pa;    Air-tightness index: 0.1~0.5m³/m.h;     Water-tightness index: 450Pa

Sound insulation index: 30~35dB;        Insulation index: Uw≤2.6w/m2.k

Aluminum profile: thermal break aluminum alloy, the wall thickness of profile stressed member is 1.4mm. Features: Adoption of novel thermal break aluminum alloy profiles and ultra-strong nylon insulated strips.