This attractive, high-quality subwoofer cabinet makes it simple to build your own 15 powered subwoofer. The black ash vinyl finish and recessed cloth grill provide a very clean yet professional look. Precision CNC-routed with a 13-7/8 diameter driver cutout (fits most 15 stamped-frame woofers) on the front, and a cutout for the Dayton SA240 subwoofer amplifier on the rear. Features cross-braced side panels, pre-mounted rubber feet, and even includes polyfiber-lined walls! Simply buy your favorite 15 driver, the SA240 amp, a few screws, and youll be rocking in no time! Specifications: Overall external dimensions: 18 W x 18 D x 19 H, Internal dimensions: 16-1/2 W x 16-1/2 D x 16-3/4 H, Internal volume: 2.5 cu. ft. Designed for optimum performance when used with the Dayton DCS380-4, QT385-4, or DVC385-88 15 subwoofer drivers.