Q Power QBOMB12TB Dual 12-Inch Triangle Ported Speaker Box with Durable Bed Liner Spray Special Triangle Port for Enhanced Bass Durable Bed Liner Spray Screw Down DELUXE Terminal Cups Rockville RQ12TB Dual 12&#034; Triangle Ported Subwoofer Bed Lined Enclosure 12&#034; Dual Ported Subwoofer Enclosure Sprayed with genuine Rhino Lining Coating Box volume: 1.8 cubic feet (per chamber) Total box volume: 3.6 cubic feet Product Dimensions: 22&#034;D x 52.25&#034;W x 15.75&#034;H