NB Plastic Internal Panels Bud Industries NB Plastic Internal Panels are designed especially for NB NEMA boxes. These panels offer a unique hole grid that allows electrical and/or electronic devices to be mounted to the panel as a sub-assembly, without punching or drilling holes. This feature enables easier prototyping. Bud Industries NB Plastic Internal Panels allows the pre-testing of components, resulting in faster, cost-effective in-field assembly.