The Maxxlink MBXP-112 ported subwoofer enclosure is designed for most 12 inch subwoofers (not included) and features a durable MDF construction and finished with UV treated black carpet. The enclosure is ported and tuned for 38Hz while providing 1.3 cu ft of air space. Installation is simple and easy with the spring loaded wiring terminal. | Maxxlink | | 12" Single Ported Subwoofer Enclosure | Black | Best Buy