Keep your room cooler: Our air conditioner door seals allow hot air to escape from inside the room through the exhaust vent. Compatible with all portable air conditioners and clothes dryers, this sealing strip insulates the room from hot air and the summer sun, keeps the air cool inside, improves the air conditioner's efficiency, and prevents mosquitoes from entering so you can enjoy your cool summer days. High-quality material: The door seal is made of professional-grade 210D polyester with a waterproof and environmentally friendly PU coating. Washable, reusable, insect-proof, and UV-resistant, it effectively prevents dust and rain penetration and can be used safely even in humid weather. Easy to install: No drilling is required, and no damage is caused. Simply attach the Velcro with a strong adhesive to the edge of the door frame, attach the door seal to the Velcro reinforcement, and secure the exhaust hose with a zip tie. Wide range of applications: This door seal for portable air