Kicker Comp RT 10" Down Firing Subwoofer Kit with Box: TRTP102-SK
KICKER COMPRT10" Down-Firing Enclosure - AudioWorks of Delaware | Turn It On! | Car Alarms - Remote Starters - Audio Systems - Navigation Systems - Multimedia Systems - Custom Car Rims & Tires - On-site Company Fleet Services
Amazon.com: Kicker 47TRTP122 Car Audio Down Firing 12" Thin Sub Box Passive Radiator Bundle with Harmony HA-A400.1 Amplifier & Amp Kit : Electronics
Pioneer® 12-inch Downfiring Enclosure For Ts-sw3002s4 Subwoofer - Walmart.com