GVG 70 Series Product Parameters Aluminum Profile Thickness:1.4mmFrame Width:70mmSash & Window Width:77mmVisible Frame Width:40mmThermal Break Width:25.3mmGlass:24 – 39mmOpening Method:Casement, Awning, Tilt & Turn Product Features Isobaric sealing structure designEuro-slot profile designExternal profile water blocking and internalstaircase drainage systemUw ≤ 1.2 W/㎡ · k Perfomance Parameters Thermal Insulation:Level 8-9Air Tightness:1.0≥q1>0.5 (Level 7)Sound Insulation:35≤Rw+Ctr<40 (Level 4 )Water Tightness:500≤△P<700 (Level 4)Wind Resistance:4.5≤P3<5.0 (Level 8) Applicable Uses ResidentialOffice Buildings