ASC Ford Mustang Convertible 1994-2014 Dual 10" Subwoofer Custom Fit Sub Box Speaker Enclosure Dimensions: Front Width 42-1/4" x Rear Width 36-1/2" x Height 7-1/4" Depth 15-1/2" Install Location: Behind Rear Seat in Trunk Install Notes: Works with or without MACH sound system Mounting Depth: 5-3/4 Inches Air Space: 0.70 Cubic Feet