PVC windows 1.Sound and Heat Insulation 2.Resistant to the erosion of acid, alkali, salt 3.nonflammable 2011 new style PVC windows1.PVC ... /UPVC profileShide/ Conch / KommerlingGlassSingle, double, tripled glass; double glass with grilleLow-E glass, Tempered glass, floated glass, reflective glass, OBS glass, etc.Thickness: 4mm, 5mm,6mm,8mm ...