R/T Dual 12-Inch Dodge Ram Quad Cab '02-'08 Sealed Speaker Box (no 2009) Mounting depth - 5.75" Holds dual 12" sub woofers (upfire) Airspace - .70 cubic feet per side/sub Solid 5/8" material with "Tri-lock" joint construction Designed for: Dodge Ram Quad Cab 2002-2008