PIONEER Alphasonik AS8DF 8 inch 600 Watts 4-Ohm Down Fire Shallow Mount Flat Enclosed Sub woofer for Tight Spaces in Cars and Trucks, Slim Thin Loaded Subwoofer Air Tight Sealed Bass Enclosure : Electronics
8" Pioneer TS-SW2002D2 Speaker Box Subwoofer Enclosure Shallow Mount S – AK Audio
Pioneer A-Series Shallow-Mount Pre-Loaded Enclosure (8-Inch Subwoofer) in the Mobile Audio department at Lowes.com