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
DS18 EN-DF10 10" Shallow Down Firing Subwoofer Enclosure 600 Watts – Droppin HZ Car Audio
Kicker 48TRTP122 Sealed downward-firing enclosure with CompRT® 12" shallow-mount subwoofer and passive radiator at Crutchfield
KICKER 48CDF124 Comp12 12" 300w Down Firing Car Subwoofer in Sub Box Enclosure 713034020332 | eBay
Kicker 48trtp82 Trtp 8-inch Thin Down Firing Subwoofer And Passive Radiator Enclosure, 2-ohm : Target