4x8'' Double Ported Subwoofer Box Carpeted

Carpeted Increases The Base up to four times stiffens the wood and no air leaks Made in the U.S.A Fits Most Hatch Back and Trunks 4-8'' Speakers each two with two port systems. Air Volume 1.67 Cubic Feet Per sides (Two Woofers share the same chamber ) Port Volume .08 Cubic Feet for two ports Mounting depth 12'' Dimensions: 39" x 11" x 13"