Package contents 1 roll, 5 meters of sound insulation sealing strip. Key benefits — why you need this Cuts airflow, dust and outside noise at the window-frame gap for a quieter, cleaner indoor environment. Flexible silicone construction maintains shape under pressure and repetitive use, so the seal keeps working over time. Special profile reduces sound transmission and absorbs part of incoming sound waves, while also softening window-to-frame contact to reduce closing noise. Main features Compatibility: available in sizes that fit window seal gaps from 4 mm to 10 mm. Measure the width of the gap before purchasing to ensure the correct fit. Material: made from durable, flexible silicone that can withstand extrusion in layers and repeated compression without deforming. Design: engineered to reduce sound transmission on both sides of the window, absorb sound waves, and lower the pressure force between window and frame to minimize closing noise. Performance: effectively blocks drafts, dust and noise to improve comfort and help maintain indoor temperature stability. Easy installation Simple to fit: measure the gap, cut the strip to length, and place it into the desired area on the window frame. No special tools required. Practical use scenarios Urban apartment: reduce street and traffic noise entering through window gaps to create a quieter living room or bedroom. Home office or workspace: minimize outside noise and drafts for improved concentration and a more comfortable work environment. Older windows or rental properties: add an inexpensive, non-permanent seal to reduce dust, airflow and closing noise without replacing the window. What to check before buying Measure the width of the window-to-frame gap and choose the strip size that matches a 4 mm to 10 mm range. This product is supplied as a 5-meter roll. Reliable, functional design intended to reduce noise, drafts and dust where windows meet frames, with easy installation and long-lasting silicone construction.