Amazon.com: American Sound Connection Car Audio Custom 6" X 9" Sealed Hi Quality Pair Speaker Enclosure Unloaded Box : Electronics
Amazon.com: Bbox Pro Audio Tuned Car Speaker Boxes & Enclosures - 6x9 Speaker Box for Great Sound Quality for Home & Vehicle - Push and Insert Speaker Terminals - Set of 2
Cerwin Vega 6x9" 2-Way Coaxial Car Speakers with 4 Four Hole Box Enclo – Pricedrightsales
Amazon.com: Atrend Pro Series 6x9 4 Way 6” x 9” Quad, Wedge Shaped Speaker Enclosure : Electronics
2) 6x9 Speaker Box Enclosure 6"x9" Car Speaker Box Coaxial Speaker Bo – AK Audio