Qpower 10 Inch Heavy-duty Single Vented Carpet Covered Durable Car Audio Vehicle Subwoofer Enclosure Woofer Box, Charcoal Gray : Target
20 Free DIY Subwoofer Box Plans to Build Your Own - Suite 101
Amazon.com: Q Power Q Bomb Series 12 Inch Ported Car Subwoofer Sub Box Enclosure with Single Vented Chamber Design and Black Bed Rhino Liner Spray Finish, Black : Everything Else
Dual 6.5 or 8" Dual Custom Sub Boxes with Kerf | Down4SoundShop.com