Dual 10" Subwoofer in a Vented Enclosure – SBX100 (nssbx 100u0031106) Good Pre loved condition at a fraction of the cost. A great addition to any car audio system. Condition: good pre-loved condition with little to no minor wear from use.(please reference photos) Kit Includes: 1 Dual 10" Subwoofer in a Vented Enclosure – SBX100 (nssbx 100u0031106)