Outfit your semi truck to be Ready for the Road Ahead™ with increased storage space, with the Buyers 18" x 18" x 24" Steel Underbody Truck Box. With a secure design, this replacement box acts as an additional space to store tools, equipment, backup materials, and important items. Manufactured with a weather-resistant and durable body to withstand extreme conditions. FleetPride is your First Click in Heavy Duty®.