Rockville Dual 12" Bedliner Sub Box for 02-17 Dodge Ram Quad Cab//1500/2500/3500 Rockville Dual 12" Bedliner Sub Box 2002-2015 Dodge Ram Quad Cab/Xcab 2500/3500 Proudly Made In The USA, Using Only The Finest Quality Materials - For The Best Level of Performance From Your Subs! 3/4" USA Heavy Duty MDF Construction Machine precision cut mounting holes. Top of the line Glue for extra durable adhesion. High quality screw in platinum terminals Designed, tested, and engineered to work with most of todays popular woofers. These enclosures are built with the quality additives needed to maximize the performance of any sound system. Rockville Dual 12&#034; Bedliner Sub Box 2002-2017 Dodge Ram Quad Cab/Xcab 2500/3500 Proudly Made In The USA, Using Only The Finest Quality Materials - For The Best Level of Performance From Your Subs! 3/4&#034; USA Heavy Duty MDF Construction Machine precision cut mounting holes Top of the line Glue for extra durable adhesion High quality screw in platinum terminals Designed, tested, and  engineered to work with most of todays popular woofers.These enclosures are built with the quality  additives needed to maximize the performance of any sound system. Type of Enclosure: Sealed Enclosure Sub Size: Dual 12&#034; Dimensions in Inches:8&#034; L x 54.5&#034; W x 13.5 H&#034; Mounting Depth: 6 (inches) Mounting diameter (hole size): 11 (inches) Wood thickness: 5/8 (inch) Air space: 0.65 Cubic feet Material: Highest-grade MDF wood on the market