... ultraviolet radiation, can adjust the indoor light4. In ventilation, louver fixed installation and thick texture, can be comfortable to enjoy the ... +9A+5mm double insulating function glass. 6mm single glass.3): Frame finished: Anodic oxidation, electrophoretic painting, powder coating, fluoro-carbon painting ... : 2.8/(m2k), 2.5W/(m2k), or below2.0W/(m2k) Fixed aluminum louver