JL Audio CP212-W0V3 Dual 12" 12W0v3 Ported Subwoofer Enclosure Box CP212-W0V3 - JL Audio 12" 12W0V3-4 Loaded Ported Enclosure with Gray Carpet Finish Power Handling: Peak: 600 watts | RMS: 300 watts Mineral-filled, polypropylene cone woofer for excellent durability Large roll surround for generous amounts of excursion Enclosure Dimensions: 15-3/4"TD x 20-5/16"BD x 31-3/8"W x 15-3/16"H