OBCON Dual 10" Chevy 1500 Extended Cab 2008 - 2011 Speaker Box With Labyrinth Power Port 49.5" width x 12.25" deep x 7" tall (DOES NOT FIT HD MODELS) Holds dual 10" sub woofers (Downfire) - Speaker mounting depth 5 3/4" Premium MDF with "Tri-lock" joint construction Labyrinth slot vent design Designed for: Chevy/GMC 1500 Siverado/Sierra Extended Cab 2007(new body style) - 2013