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Atrend E12DSV 12 Inch Dual Vented Subwoofer Enclosure – Car Toys
Qpower Qbass Dual 12 Inch Heavy Duty Mdf Car Audio Subwoofer Enclosure Boxes With Shared Slot Port Vent And Dual Chamber Design, Charcoal (2 Pack) : Target
Car Audio Dual 12" Vented Subwoofer Stereo Sub Box Ported Enclosure 3/4" MDF | eBay
Amazon.com: Dual Electronics SBX212i 12-inch illumiNITE High Performance Studio Enclosed Subwoofers with 1,200 Watts of Peak Power & 41-Ounce Magnets : Electronics