• Good resistance and collision cushioning. • Reduces external noise and cold/hot air leakage. • Excellent sealing effect, ideal for wind, dust, noise, and heat preservation. • Covered with wear-resistant PE film. • Filled with high-density polyurethane foam, flexible and elastic. • Quickly recovers its initial shape and provides better sound insulation. • Compatible with most plastic, aluminum, and wooden doors and windows with slots 2.5 to 4 mm wide. • Seals door gaps from 2 to 6 mm. • No adhesive tape required, just clean the slot and push the seal into the frame. • Fits well to the door or window frame and does not fall off easily.