For cars with a factory T-top option, these auxiliary T-top sealing strips are 51 inches in length per side and come with an adhesive tape backing for easy installation. Designed to replace OEM #20139617, they are a perfect fit for 1978-1987 Buick Regal, Chevrolet Monte Carlo, Oldsmobile Cutlass Supreme, and Pontiac Grand Prix models, as well as 1988 Chevrolet Monte Carlo and Oldsmobile Cutlass Supreme cars. Crafted by SUPERsoft, these seals are 30% softer and more durable than other brands, ensuring a snug fit and long-lasting performance. Unlike other products, they are made without accelerants or cheap fillers, which means they resist aging and cracking over time. These sealing strips are essential for keeping water, wind, and noise out of your vehicle, preserving its interior and enhancing your driving experience. Backed by a 30-year warranty from SUPERsoft, you can trust in their quality and durability.