Modular Enclosures are meant to allow for different configurations of a product or product-family. This means that different modules can be combined in various ways by sharing some kind of interlock. Examples include snap-on battery packs, transmitters, range extenders, etc. In many cases the objective includes branding, meaning that all components of a system share a distinctive look and feel. Shared printed features like graphics and logos can be used to further enhance the branding. ABS and PC-ABS are the preferred materials for these kind of modular systems.