... efficience , elegant looking 2012 French Aluminum Venetian blind window (Factory )1.Material:UPVC &PVC,Aluminum ,as per ... the colour you want.3.Glass:Single glass,Double glasses,Low-e glass,Toughened glass,Insulated glass,and so on.4. ... so on10.Acoustical insulattion:31dB11.K-value of window:2.6w/m2.k12.Wind resistance:3700pa13.Air ... ,Foshan City, China 2012 European Aluminum Venetian blinds window