Monoprice 5.25-Inch Center Channel In-Wall Speaker (109339) Use three across the front of your home theater for silky smooth sonic pans across a massive and details sound stage Match them with our in-wall subs for an even wider frequency spread and greater depth of field However, it is representational of the steps, tools, and types of procedures that would be used for the installation of any in-wall or in-ceiling speaker and is included on this page for reference purposes only