Standard aluminum windows are mass-produced and come in set sizes and styles, offering affordability and quick installation. They may not fit perfectly into unique spaces and may lack customization options. Custom-made aluminum windows, on the other hand, are tailored to specific dimensions and design preferences, ensuring a perfect fit and enhanced aesthetics. They often come with more features and options, such as energy efficiency, security, and unique styling, but are typically more expensive and have a longer lead time for production and installation.