4×8”” Double Ported Subwoofer Box

Armor Coated With High Pressure Polyurethane Bed Liner Material
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″”