ford f250 subwoofer box

QPower Single Triangle Car Audio Ported Subwoofer Box, Fits Most 12-Inch Subwoofers - Deep Bass MDF Enclosure, Tuned to 54 Hertz, 2.2 Cu Ft Air Space

MB Quart 400 Watt 10 Inch Shallow Subwoofer and Q Power Slim Sub Box Enclosure