6-1/2'' (160mm) 2-Way Marine Speaker with integrated grille assembly, Polypropylene Woofer Cone, Polypropylene-dome Tweeter, cast-polymer Basket and sealed Motor structure.The JBL MS6200 marine loudspeaker was designed specifically for marine applications. A waterproof motor structure, sealed cones, and integrated grilles ensure that these speakers will stay afloat for years. Rubber surrounds outlast foam and offer superior cone-edge suspension. One-piece cast-polymer basket holds up, even after excessive exposure to sun and salt. Stainless-steel mounting hardware included. Grille-mounted tweeter allows JBL to seal the front of the woofer cone, protecting the motor structure from sea spray and washdowns. Sealed magnet structure protects the motor structure from water.