... . Profile:aluminium alloy, 6063-T5.(Chinese Top Brand aluminum profile) ,with thermal break systerm. 2. Profile thickness: 1.6mm3. Surface treatment: ... not rust, rot, warp, or need constant finish maintenance. The aluminum frame will last for years and years, even as it ... rain, wind, and snowstorms. or need constant finish maintenance. The aluminum frame will last for years and years, even as it ...