ASC Honda Ridgeline Truck 2005-2014 Dual 10" Subwoofer Custom Fit Sub Box Speaker Enclosure Dimensions: Width 49" x Height 8-1/2 x Depth 11-1/2" Install Location: Under Rear Seat Install Notes: No Modifications Required Mounting Depth: 5-1/2 Inches Air Space: 0.65 Cubic Feet