JL Audio SGR-12 Rubber Gasket/Grille Receiver for 12W0/12W3/12W3v2 JL Audio Subwoofer 12" Black Mesh Subwoofer Grille Designed specifically for the original 12W0, 12W3 and 12W3v2 subs Subwoofer must be equipped with the rubber gasket/grille receiver Provides the best protection possible for your JL subwoofer Metal mesh grille painted black