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![2.50 ft³ @ 25Hz Ported Enclosure Box for JL Audio 13.5" W3v3 (13W3v3) Subwoofer | eBay](https://i.ebayimg.com/images/g/wD8AAOSwR21kdumL/s-l1200.webp "2.50 ft³ @ 25Hz Ported Enclosure Box for JL Audio 13.5" W3v3 (13W3v3) Subwoofer | eBay")