Must read before installation: Suitable for smooth tiles, smooth wood, and smooth marble, not suitable for concrete. Security doors cannot be used. Applicable door gap size: 0.3-2.6 cm, door thickness: 3.5-5.5 cm. The door bottom sealing strip plays an energy-saving role. It can prevent the exchange of indoor and outdoor air through the gap at the bottom of the door, but it cannot guarantee the change in indoor temperature. Innovative self-adhesive partition design: Based on consumer feedback, the design has been improved: the main body and the self-adhesive part incorporate a new folding partition design, which solves the problem of uneven folds on the self-adhesive strip, which spoils the aesthetics of the door. Easy installation: Installation is completed in three simple steps: click, slide, and fold. In addition, the major problem of the door strip detaching during opening and closing is effectively solved. Improved insulation foam: The underside of the rubber strip features a new insulation foam design, which reduces noise when the rubber strip touches the floor. This ensures that the doors open and close truly silently. At the same time, the foam protects the floor from wear and tear due to prolonged use. Better insulation and sealing effect: We have improved the design with double insulation chambers. Compared with conventional models on the market, the insulation effect is significantly improved. Thanks to the hollow insulation chambers, a lower insulation layer is formed after installation, providing a strong seal and improved insulation and windscreen effects.