Affordable High Performance Solutions Installer Series is our affordable high-performance lineup, featuring custom installation solutions for in-wall, in-ceiling and outdoor applications. Titanium dome tweeters and mineral-filled polypropylene drivers ensure great performance, while bezel-free paintable grilles that are secured with high-strength magnets provide and aesthetic that blends invisibly into any room Each model comes with an extremely robust mounting-lock system that couples with the speaker's vibration-resistance ABS chassis when installed.