6.5" Dual Speaker Box Enclosure 6 1/2" Car Speaker Coaxial 5.125" Hole – AK Audio
Amazon.com: Pyle 6" Dual Subwoofer Box System - Dual Series Vented Subwoofer Enclosure - Rear Vented Design with Built-in Illuminating LED Lights, 2 x 200 Watts Max Power, Two 4” Tweeters : Electronics
1x PRO DUAL SEAL 10" SUBWOOFER ENCLOSURE CAR AUDIO SPEAKER BOX ALL MDF 618952498280 | eBay
Amazon.com: Pyle 6" Dual Subwoofer Box System - Dual Series Vented Subwoofer Enclosure - Rear Vented Design with Built-in Illuminating LED Lights, 2 x 200 Watts Max Power, Two 4” Tweeters : Electronics
Amazon.com: Bbox Dual Vented 15 Inch Subwoofer Enclosure - Pro Series Dual Vented SPL Car Subwoofer Boxes & Enclosures - Premium Subwoofer Box Improves Audio Quality, Sound & Bass - Nickel Finish Terminals : Electronics
QPower QBASS Dual 12 Inch Car Audio Subwoofer Enclosure, Charcoal (6 Pack) - Walmart.com
Buy Wholesale China Dual 6 Inch Party Speaker Box With Bluetooth, Rechargeable Battery & Dual, Party Speaker, Bluetooth, Battery at USD 48 | Global Sources