The Kenworth W900 and T Defrost Louver Insert is a practical and durable solution for your truck's defrost system. Made of chrome plastic, this insert is available for both the driver and passenger sides, providing a sleek and functional addition to your vehicle. Sold individually, this insert is a cost-effective way to improve the appearance and functionality of your truck's interior. Upgrade your defrost system with this high-quality insert for a more comfortable and efficient driving experience.