Goldwood TR8D 8" Dual Sealed Car Box Speaker Cabinet Goldwood Sound TR8D dual 8" woofer sealed car enclosure, 8" woofer holes are 7.125" in diameter, built-in terminals with gold screw posts, wire leads included, fits most cars High quality MDF hardwood, enclosure volume is .33 cubic feet per chamber, height 10" x length 20" x top depth 7" x bottom depth 9.75", speaker mounting depth is 6.5" The front (where the woofers are loaded) is flat and the back is slanted, made of only the best black aviation carpet Ships fully assembled, simply drop in your woofers Use for car, truck, SUV or fixed installation speakers