Wall Module is a type of structure component.
The Wall module is made by similar Structural Modules. This means that they are made by the same person, and don´t have to be made by a Structure Factory. Walls are required for a wide variety of Architect items, and can also be used creatively for decoration or improvised furniture.
Walls are a great way to get quick experience for Architect while still providing components for things to sell. Once experience is no longer a factor, it is best to do a factory run of Structural Modules to craft walls—and if you have enough of these, even run a factory run of wall modules. It will make crafting structures must easier once you have a stockpile of these.
The Structure Modules used in a Structure Factory run of Wall Modules do not need to be the same. You can have 150 Structure Modules from this factory run, 350 from a different run and 500 from a third run—all made with different materials for each run, ending up with a single stack of 100 (10 Structural Module per Wall Module) Wall Modules.