JL Audio M6 Marine Subwoofer Grille - Maxium Performance. Optimized for high-powered operation, M6 marine subwoofers can be installed in various applications and are built to withstand the rigors of marine use. Delivers Powerful Deep Bass in Open Air Applications; Models for use with or without a dedicated enclosure; Grill and Trim are easily removable for painting; Exceeds International standards for salt fog and UV Exposure; 8-inch Subwoofers One marine subwoofer; One grille; Six stainless steel mounting screws; Six stainless steel washers; Grille removal tool (Luxe models only); 10-inch Subwoofers ; One marine subwoofer; One grille; Six stainless steel mounting screws; Six stainless steel washers; Grille removal tool (Luxe models only);