Origin Acoustics BLENDSMBB Masonry Back Box For BLENDS Invisible Speakers, Single

Use the BLENDSMBB metal back boxes for installing Invisible Speakers into masonry walls or ceilings! Product is best for commercial settings or multi-dwelling residential (MDUs). The metal back box can be installed pre- or post-masonry setting to avoid chipping out a location in the masonry. The wood portion of the box provides a stable and secure attachment point for the speaker while the outer metal shell provides protection from the surrounding masonry. (Single)