ASC Jeep Wrangler JK 4 Door Unlimited Dual 12" Subwoofer Custom Fit Speaker Box Enclosure Dimensions: Width 49-1/2" x Height 13-1/2" x Top Depth 11" x Bottom Depth 12-1/4" Install Location: Behind Rear Seat Install Notes: No Modifications Required Mounting Depth: 8-1/2 Inches Air Space: 1.0 Cubic Feet