Aluminum profiles used for windows and doors can have several finishes to enhance their appearance and durability. These include anodizing, which creates a protective oxide layer; powder coating, offering a wide range of colors and textures; thermal spraying, which applies a coating to improve resistance to wear; and electrophoretic coating, which provides a smooth, even finish. Additionally, there are finishes like polishing for a shiny look, brushing for a matte appearance, and wood grain transfer for a natural aesthetic. Each finish serves a specific purpose, from enhancing visual appeal to providing corrosion resistance and UV protection.