http://www.prancebuilding.com/blog/portfolio-item/guest-room/

aluminum sliding system push-pull opening is a light and nimble operation,can easily control opening area and save more area indoor&outdoor. heat insulation,using wool strip with high sealing performance,single control point lock is elegant,safe&reliable.the function of resisting wind pressure and air permeability performance are glass Ⅰ,water tightness performance are glass Ⅱ sound insulating performance is 29dB,and coefficient of thermal conductivity is K=3.0(w/m2.k)