Amazon.com: Atrend 8 inch Vented Enclosure Carpeted Car Subwoofer Speaker Box - Improves Audio Quality, Sound and Bass - High Grade MDF Construction with Nickel Finish Speaker Terminal - Black : Electronics
8-Inch Double Subwoofer Enclosure
Qpower Qbgmcff07208 8 Inch Dual Port Subwoofer Enclosure Box With Underseat Down Fire For Gmc And Chevy Crew Cab 2007 To Current : Target
Down4sound PRO-FAB 8 | 8 Sub Box | Single 8-Inch Ported Subwoofer Enclosure Box - Down4Sound Shop