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The Velodyne SC-IWBB Back Box is a rear enclosure box designed for the SC-IW (in-wall) subwoofer. It was specially designed to maximize in-wall bass performance while significantly reducing wall vibration. It offers the ability to strategically place the subwoofer assembly in new construction (rough-in stage) or home remodeling applications; and its durable structure easily mounts directly onto wall studs with nails or screws.