... 4. Export package standards aluminum outside opening window Frame and fan angle adopt isopiestic strip, double sealing strip, ensure the ... .1 W/(m2k) or below 2.0 W/(m2k). aluminum outside opening windowAluminum / pvcFeature: Economic and reasonable structure, good ... or double glass(tempered glass, figure glas, frosted glas, coated glass, low-e glass, tinted glass etc aluminum outside opening window: ...