Qpower Qbfordff09408 8 Inch Quad Port Subwoofer Enclosure Box With Underseat Frontfire For Ford F150 Super Crew, And 250/350 Super Duty Trucks : Target
Amazon.com: Ported Sub Enclosure Box for an 8" Sundown Audio X-8 X8 Subwoofer - 3" Aeroport - 32 Hz - 1.0 CF : Electronics
Amazon.com: Atrend 8SQV 8” Single Vented Subwoofer/Speaker Enclosure Subwoofer Box Designed to Let The Music Move You. High Grade MDF Construction with Nickel Finish Speaker Terminal : Electronics
1x Port Single 8" Universal Standard Cab Truck Subwoofer Box Enclosure 1" MDF | eBay