1. Efficient Cooling - The seal blocks the return flow of warm air, enhancing the efficiency of your portable air conditioner or tumble dryer. It helps your room cool down faster and creates a more comfortable environment. 2. Size - Available in 200 cm and 300 cm lengths. Suitable for various portable air conditioners, dryers, exhaust dryers, and dehumidifiers. A versatile solution for different appliances and types. 3. Compatibility - Designed for commonly used tilting sashes or wings. Works with left- or right-opening types as well as bottom-hung sashes or skylights. Not compatible with sliding sashes or doors. 4. Adjustable and Waterproof - The single-tube sealing cloth for mobile air-conditioning units comes with an adjustable tension rope and is made of waterproof polyester. It provides a secure, tight seal around the opening and prevents air leakage. Use scenarios - Scenario 1: In hot summer conditions, use with a portable air conditioner in a room with a tilting sash window. The seal minimizes warm air re-entry, speeding up cooling. - Scenario 2: In a laundry room or utility area with a tumble dryer or dehumidifier, the seal helps maintain a cooler room by reducing air exchange with adjacent spaces. - Scenario 3: For homes with bottom-hung sash windows or skylights, the seal creates a tight seal to improve exhaust efficiency. It is not suitable for sliding sash or sliding doors.