This custom-engineered Sealed BOOST enclosure is designed for a seamless fit in 2014-2018 Chevrolet Silverado and GMC Sierra Crew Cab vehicles, featuring a 3/4" medium-density fiberboard construction and carpeted finish that matches the factory interior. Installed under the rear seat, the unit is loaded with two high-performance 10" NVX SMW10D4 subwoofer capable of handling 700 watts RMS (1400 watts peak) at a final 1-ohm impedance. The system delivers a frequency range of 25 - 350 Hz using premium components like a Carbon Fiber Reinforced Polypropylene cone, a 50 oz. high-energy ferrite magnet, and a 2" high-temperature aluminum voice coil for maximum durability and deep, accurate bass.