Goldwood E-12SP 12" Single Vented Box Speaker Cabinet Goldwood Sound E-12SP single 12" woofer ported bass car enclosure, 12" woofer hole is 11" in diameter, built-in spring loaded terminals, fits most cars High quality MDF hardwood, enclosure volume is 1.49 cubic feet, height 13" x length 18" x depth 16", speaker mounting depth is 14.5" Ported for fuller bass response, made of only the best black aviation carpet Ships fully assembled, simply drop in your woofer Use for car, truck, SUV or fixed installation speakers