Feature●Subwoofer Box for Toyota Tundra CrewMax: Upgrade your car’s audio system with the QPower 10-inch dual-ported custom subwoofer box, which fits the 2014–19 Toyota Tundra CrewMax.●Ported Sub Box: This empty speaker box features a durable bed-liner finish that protects your car’s interior and allows you to choose the speakers you want in your vehicle.●Dynamic Sound: Our dual 10-inch subwoofer box offers 2 enclosed ports that help create a high-quality sound. It has a tuning frequency of 36 Hz. Check your connection and enjoy your tunes.●Easy-to-Install Behind-Seat Subwoofer Box: This ported subwoofer box fits behind the seat of your 2014–19 Toyota Tundra CrewMax and has a mounting depth of 3 3/4". It’s easy to mount and hook up.●QPower: At QPower, we value music and cars just as much as you do. Enjoy driving with your friends and family while your superior sound system sets the mood for the ride.Description