Husky Liners Under Seat Storage Box Fits 15-18 F150 SuperCrew, (17-18 F250/350 Crew WITHOUT Factory Storage Box) Fits models without the factory storage box. GearBox will not fit trucks with the optional dealer-installed Kicker subwoofer mounted under rear passenger seat. It will fit models with the factory Sony stereo system which does include a subwoofer behind the rear seat back. Large storage capacity Tough & durable material resistant to most chemicals while providing an anti-skid surface that minimizes cargo shifting