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Metra 12" Single Ported Subwoofer Enclosure Charcoal TCBXP-112 - Best Buy
12" single Compact High Performance Glue it & Screw It Sub Enclosure - GP Car Audio
Gately Audio - 4 12” subs up port back 7.0cf
SPL-12SV2 12" Single Side Ported Subwoofer Enclosure with Rugged Coat – Atrend USA
Qpower Qbass Dual 12 Inch Heavy Duty Mdf Material Car Audio Subwoofer Enclosure Boxes With Shared Slot Port Vent And Dual Chamber Design, Charcoal : Target
1x Port Single 12" Universal Standard Cab Truck Subwoofer Box Enclosure 1" MDF | eBay
Amazon.com: Skar Audio AR1X12V Single 12" Universal Fit Armor Coated Ported Subwoofer Box with Kerf Port : Electronics
4 Sundown Audio LCS 12" Sub up Port Back Subwoofer Box Plans | CustomLowz