1.The package includes: 1 roll with 10 meters of soundproof sealing tape. The window seals are available in a variety of sizes to fit window sealing gaps from 4 mm to 10 mm. Please measure the width of the gap before purchasing. 2.Material: The window sealing strip is made of durable and flexible silicone and can withstand layered extrusion. The window sealing strip for the frame can effectively prevent airflow, dust, and noise from entering your home or office, providing you with a quiet and comfortable living space. 3.Design: The window sealing strip adopts a special design. The construction effectively reduces sound transmission on both sides of the window and absorbs some of the sound waves, thereby reducing noise. Additionally, it can effectively reduce the pressure between the window and the frame when closing the window, thus reducing the closing noise. 4.: Our soundproof window seal was designed with convenience in mind and is incredibly easy to install. Simply measure, cut the seal, and install it at the desired location on your window. Save time and effort and enjoy the benefits of a wellsealed window.