Indicates the audio is dubbed in Peninsular Spanish or Latin American Spanish.
The most common association with “CB4” in film circles is the 1993 American satirical mockumentary CB4 , directed by Tamra Davis and starring Chris Rock. That film satirizes gangsta rap culture. However, in the context of “Celda Bloque 4,” “CB4” likely stands for — an abbreviation where “CB” = Celda Bloque. CB4 Celda Bloque 4.-Spanish--DVDRip--58
A file labeled would likely have these technical specifications: Indicates the audio is dubbed in Peninsular Spanish