Window Sash Seal for Portable Air Conditioners Efficient and easy installation: Designed for swinging sash windows with a total perimeter of 380 cm or 460 cm. Measure the four sides, apply the included adhesive tape to the frame, and press the seal into place. No tools required; keeps warm indoor air out and directs the exhaust hose outside. Secure and reliable design: Extrastrong closures hold the exhaust hose securely and stay closed during use. Helps prevent entry of warm air, moisture, and insects. Compatibility and durability: Suitable for both single and dualhose portable air conditioners from various brands. Made from thickened polyester with a silver coating; water resistant and washable at 40 C. Built for longlasting performance. Functional and moisture control: Seals around the unit to minimize drafts and manage moisture, contributing to steadier temperatures and improved indoor air quality. Practical use scenarios: Living room or bedroom with a standard sash window and a singlehose portable AC. Larger rooms or home offices with a dualhose unit and a wider sash. Temporary setups in rental apartments or seasonal use, where quick, tool installation matters.