For convertible models, these front vent window seals are designed to fit perfectly on both the driver and passenger sides, ensuring a snug and secure seal. Crafted with the latest advancements in CAD and CNC milling, these seals boast precise 3D contouring for an OEM-quality appearance and a flawless fit. They are specifically made for 1939 Buick Century Series 60, Buick Special 40, Cadillac Series 60 Special, LaSalle Series 50, Oldsmobile Series 70 and 80, Pontiac Quality Six, as well as 1940 Buick Century Series 60, Buick Special 40, LaSalle Series 50, and various 1940 Pontiac models, including Deluxe Eight, Deluxe Six, Special Six, and Torpedo Eight. These seals are built to keep out water, wind, and debris, preserving the interior of your classic car while enhancing its overall look. Backed by Metro's 30-year warranty, you can trust in their durability and long-lasting performance.