ported under seat subwoofer box

QPower QBASS Dual Vented 12 Inch Heavy Duty MDF Material Single Car Audio Subwoofer Enclosure Box with 2 Vents for Better Heat Management, Charcoal

Q-Power Shallow Single 12 Inch Heavy Duty Sealed MDF Material Truck Audio Subwoofer Enclosure Box with Durable Carpeted Exterior, Charcoal Gray

QPower 10 Inch Heavy-Duty Single Vented Carpet Covered Durable Car Audio Vehicle Subwoofer Enclosure Woofer Box, Charcoal Gray

QPower 15 Inch Heavy Duty Single Vented Carpet Covered Durable Car Audio Extra Large Vehicle Subwoofer Enclosure Woofer Box, Charcoal Gray

QPower 12 Inch Heavy-Duty Dual Sealed Carpet Covered Durable Car Audio Vehicle Subwoofer Enclosure Woofer Box, Charcoal Gray

QPower Dual 12-Inch Heavy Duty Ported Car Audio Subwoofer Box - Deep Bass MDF Enclosure with Charcoal Carpet Finish, 1.6 Cu Ft Air Space Per Chamber

QPower HD112VL Single 12 Inch SPL XL Heavy Duty Side Ported Subwoofer Box Enclosure with Durable Carpet Covering for Car Audio Systems

QPower QBOMB12V Dual 12" Vented Ported Subwoofer Sub Box with Bedliner Spray

QPower QBOMB8V Dual 8 Inch Vented Port Subwoofer Sub Box with Bedliner Spray

QPower QBGMCFF07408 8 Inch Quad Port Subwoofer Enclosure Box with Underseat Front Fire for GMC and Chevy Crew Cab 2007 to Current

Q Power QBomb Single 12 Inch Vented Subwoofer Sub Box with Black Bedliner Spray

QPower QBGMCFF07208 8 Inch Dual Port Subwoofer Enclosure Box with Underseat Down Fire for GMC and Chevy Crew Cab 2007 to Current

QPower QBOMB15VL Single 15" Vented Ported Car Subwoofer Sub Box Enclosure QBOMB

QPower Dodge Ram Quad Cab '02-Newer Dual 12 Inch Subwoofer Box Sub Enclosure

QPower Shallow Single 10" Sealed Truck Subwoofer Speaker Box, 18" x 13" x 5.25"

MTX Car Audio

MB Quart DS1-204 8 Inch 400 Watt MAX 200 Watt RMS 4 Ohm Dual Voice Coil, Shallow Slim Subwoofer Speaker Pair for Car Audio Sound System

King Boxes D12V 12-In. Double-Speaker Single-Port Black Carpeted Enclosure