OBCON Dual 10" Chevy 1500 Crew Cab 2008-2013 Speaker Box With Labyrinth Power Port 1.0 cu ft airspace - 5 3/4" mounting depth (DOES NOT FIT HD MODELS) Holds dual 10" sub woofers (Downfire) Premium MDF with "Tri-lock" joint construction Labyrinth slot vent design Designed for: Chevy/GMC 1500 Siverado/Sierra Crew Cab 2007(new body style) - 2013