- Custom Size Selection for Perfect Fit : Available in lengths of 300 cm, 400 cm, and 500 cm. Measure the three open sides or all four sides of your window, skylight, or balcony door. Always opt for the next larger size for optimal sealing (e.g., if measuring 390 cm, choose 400 cm). - Effective Sealing Solution : Seamlessly closes gaps to prevent warm air from entering, enhancing the efficiency of your portable air conditioner. - Insect and Weather Protection : Made from waterproof material, it effectively repels rain and keeps mosquitoes, flies, and other pests out, ensuring a comfortable indoor environment. - Versatile Compatibility : With a width of 40 cm, it fits most common window types, including tilt windows and inward/outward opening windows. Please note it is unsuitable for sliding windows, pivot windows with a central axis, or windows with very deep frames. Practical Applications : 1. Home Cooling : Ideal for sealing windows while using a portable air conditioner, improving cooling efficiency and comfort. 2. Pest Control : Perfect for keeping your living space free from insects during warm months, allowing you to enjoy fresh air without unwanted guests. 3. Weather Protection : Effective for use in outdoor areas, preventing rain and moisture from entering, thus maintaining a dry and pleasant indoor atmosphere.