You just bought a Polk/MOMO subwoofer, one of the most advanced subwoofers on the planet. Why not protect it? The G12 grille guards your MM124 12" subwoofer against harm with super-tough ABS plastic construction. This rugged grille, modeled on the design of MOMO's Quasar 2 wheel, lends a touch of European styling to your sub enclosure. 1-year warranty.