12S Sealed 12" Single Car Bass Box Speaker Enclosure Cabinet for Car Truck SUV 12" woofer hole is 11" in diameter, built-in terminal with gold screw posts, fits most cars High quality MDF hardwood, enclosure volume is 1.25 cubic feet, height 13" x length 16" x top depth 12" x bottom depth 15.5", speaker mounting depth is 11.75" The front (where the woofer is loaded) is flat and the back is slanted, made of only the best black aviation carpet Ships fully assembled, simply drop in your woofer Applications: car, truck, SUV or fixed installation speakers