1999-06 Chevy Extended Cab 1-12'' Down Fire Sub Box Poly

Fits 1-12'' Speaker
Armor Coated With High Pressure Polyurethane Bed Liner Material
Increases The Base up to four times stiffens the wood and no air leaks
Fits Under The Back Seat( Driver Side )
Down Firing System
Mounting Depth 6''
Air Volume .73 Cubic Feet
5/8'' M.D.F