... teak, pine, larch, etc.Glassdouble toughened glass, triple insulating glass, Low-E glass, coated glass, frosted glass, ... ....HardwareGerman hardware: Roto, Siegenia, G-U.Heat insulating stripimported nylon PA 66 from GermanSealing joint stripEPDM( corrosion resistance ... , heat resistance, oxidative resistance)Surface treatmentSIKKENS ...