... wood window -- window grille design-two sashesAdopting the German IV68 series door and window system with a laminated wood profile, ... crush and bend-resistant strength. The surfaces are coated with a special paint specifically designed for outdoor use, ... etc. Thickness: 68mmGlassSingle, double, tripled glass; double glass with ArgonLow-E glass, Tempered glass, floated glass, frosted glass,reflective ...