The Mack GU713 Cab Skirt is a practical and durable product made of stainless steel. It is designed to fit most Mack GU713 makes and models, providing a sleek and functional addition to your truck. The cab skirt is available in stainless steel and comes in pairs, with hardware included for easy installation. Please note that it will not work on models with chassis fairings. The driver's side of the cab skirt also features a block heater cutout, ensuring convenience and functionality.