The main advantage lies in the significant amount of time saved when developing our technical projects, thus allowing better quality graphic representations. Reuse of AutoCAD blocks is not restricted to our own designs, since logically, we can also use any block or CAD file , for more details of door cad blocks download this file.AutoCAD door drawings are of high quality and high detail. an interior door design that is completely suitable for an interior in the DWG format. Drawing Door CAD block. for more details download this file .