... , energy saving, secure and weather-proof, easy to install.1. Profile in common use, 55 Series Profile adopt 14.8 ... from 30dB to 35dB.7. Heat insulation can achieve 1.8W / m² K ~ 2.8W / m² K.8. With sponge foam composite EPDM ... Thermal Break Aluminum Casement WindowProfile Series Thermal BreakFrame Width85mmProfile Thickness 1.4 mmFinishing Powder coating, Electrophoresis, Anodize and PVDFColor Option ...