2014-2021 Toyota Tundra Crew Max subwoofer Box Sub Box 2x12 PolyArmor Coated With High Pressure Polyurethane Bed Liner Material Increases The Base, stiffens the wood and no air leak Weather and water proofing Fits Toyota Tundra Double Cab for 2014 2021 Speakers 2 12'' Systems Air Volume . 89 cu. ft. Per Sides Mounting Depth 5'' with the Magnet Diameter less than 5'' Dimensions 51'' wide x 7'' bottom depth x 2'' top depth Material 5 8'' M. D. F