The JL Audio SGR-10TW3 is a black, steel, mesh 10" subwoofer grille designed to fit the 10" TW3 JL Audio subwoofer. The grille fits between the subwoofer"s surround and plastic concealing ring (there are no screws, clamps or extra hardware needed to attach the grille). his steel-mesh grille fits over a 10" TW3 sub, adding a clean, refined look. It protects your sub from accidental damage, yet gives its surround proper clearance for pumping out great-sounding bass.