Atrend AFG-FM12S Phantom Fit Single 12-Inch Sealed Passenger Side Fiberglass Enclosure for Ford Mustangs 2005-2013 (Black) Custom Fit for Ford Mustang 2005-2013 Fiberglass Construction Black High Gloss Finish with Silver Spring Loaded Terminal Cups 1.2 Cu. Ft. Air Space per Sub 9.0-Inch Mounting Depth