Check the listing for details. for 03+ Lincoln Navigator Custom Ported Sub Enclosure Subwoofer Box ~ 3.0 CF. Condition: New. Listed at 404.95 USD. Custom Built Ported Subwoofer Enclosure for a Lincoln Navigator 2003+ Description: This listing is for a custom built ported subwoofer box for 2 12" or 10" subs to fit behind the third row seats in a Lincoln Navigator. The first 6 Pictures show fitment in the "stretch" model The last two pictures show fitment in the "not-stretch" model Enclosure Details: - 3/4" MDF Construction - 2 12" subs (10" subs can be substituted by request) - Subs are recessed 1/2" - Black carpet (charcoal or light grey carpet may be substituted upon request) - Port Tubes - 4 2" aeroports - 8.5" long - Tuned to 34 Hz (frequency is adjustable upon request) - Exterior Dimensions Length - 48" Height - 18" Bottom Depth - 12 Top Depth - 7.5" - 3.0 Cubic ft total - Roughly 65 lbs - Sealed air tight with liquid nails caulk