Atrend A162-10 Dual 10" Down Fire 2000 - 2006 GM HEAVY DUTY CREW CAB Subwoofer Box Bedliner Finish Dual 10" Downfiring Subwoofer Enclosure Crew Cabs 2000 and UP Fits 2000-2006 Gm Heavy Duty Crew Cabs MDF Construction Ultra Tough Bedliner Finish Completely Carpeted Enclosure 0.75-inch Speaker Baffles