Precision Engineering & Robust Construction Crafted for durability and performance, this mirror features a sturdy ABS plastic frame and a chrome-plated glass lens with a wide-angle R320 curvature. The integrated heating element operates at 12V DC with 15W of power, providing efficient and rapid defrosting to maintain optimal visibility. Key Features & Benefits: All-Weather Reliability: The heated glass quickly melts frost and dissipates fog, ensuring a clear rearview even in harsh, cold conditions. Expanded Field of Vision: The wide-angle design significantly reduces blind spots around your truck, enhancing overall awareness and safety during lane changes and maneuvers. Perfect Fit & Easy Installation: This is a direct replacement part, designed to seamlessly fit for Kenworth T170, T270, T370, T440, T470, T660, T800 and Peterbilt 389 models. Durable Materials: The high-quality ABS frame resists impact and weathering, while the chrome-plated glass offers a clear, long-lasting reflective surface. What's in the Box? 1 x Door Mirror Frame with Heated Lower Mirror Glass