Aluminum extrusions have become a cornerstone in modern engineering and design, particularly in the realm of Computer-Aided Design (CAD). Among the various sizes and profiles available, the 20x20 aluminum extrusion stands out due to its versatility, strength, and ease of use. This article explores the key benefits of using 20x20 aluminum extrusions in CAD projects, highlighting their applications, advantages, and the reasons why they are favored by engineers and designers alike.