With our in-ceiling and in-wall speaker back boxes, you'll be able to enhance your speaker's performance without spending a ton of money. These affordable metal back boxes provide the ideal air volume for the speaker. It also acts like a sound chamber by directing all the sound outwards and insulating against sound that would otherwise potentially travel to other rooms or floors. If you have in-wall speakers facing outside on a wall between your patio and kitchen, for example, the ideal in-wall speaker box construction would ensure that your music travels outside rather than in towards the house.