... 2.good surface. 3.aluminum profile 4.high quality and best price Material6063,6060,6061,6005TemperT4,T5,T6Surface treatmentMill Finish ... Red,Blue,or as requiredLength≤6mShapeRound,Square,T-slot,or as per the drawings and samplesFabricationcutting,drilling,punching,bending,etcWall thickness≥0 ... Please contact us for more details freely. aluminum window profile with patent design good appearance