... 6063-T5.(Chinese Top Brand aluminum profile) ,with thermal break systerm. 2. Profile thickness: 1.6mm3. Surface treatment: anodized, ... frame will last for years and years, even as it endures direct sunlight, rain, wind, and snowstorms. or need constant finish ... break material6.Water proof,with special bottom track,and EPDM sealing systerm.7.much more economic than casement windowApplicable Places: ...