For the 1949 Mercury 4-door sedan, these rear vent window seals are precision-engineered to ensure a perfect fit and seamless appearance. Designed using the latest advancements in CAD and CNC milling, these seals provide accurate 3D contouring that matches OEM quality. Sold as a pair for both the right and left sides, they are crafted to restore the original look and functionality of your classic Mercury. These seals are made to keep out water, dust, and wind, ensuring a quieter and more comfortable ride while protecting the interior of your vehicle. Backed by Metro's 30-year Platinum Warranty, you can trust in their durability and long-lasting performance.