The Minimizer Medium-Duty Floor Mats for Peterbilt 337 and 348 Models are laser-measured to ensure an exact fit, and their tray system features a raised edge that keeps everything on the mat. The tray system is designed to be removed easily for quick cleaning. The floor mats have a textured surface, ensuring a solid grip. Made out of a proprietary thermoplastic, the Peterbilt Floor Mat models are designed to hold up to the daily use of the heavy duty trucking industry and will not break or crack under extreme conditions. They are backed by a lifetime manufacturer's warranty.