Double Ported 3×12″” Poly

Armor Coated With High Pressure Polyurethane Bed Liner Material
Increases The Base up to four times stiffens the wood and no air leaks
Fits Most Hatch Back and Trunks
3-12”” Speakers each with two port system
Air Volume 2. 09Cubic Feet Per sides (separated chambers)
Port Volume .14 Cubic Feet
Mounting depth 19””
Dimensions 39.75””Wx22.75″” Deep x 15.5″” H