Adjustable size and broad compatibility - Available in two lengths: approximately 300 cm or 400 cm, adjustable to your space. Fits all types of sliding panels (horizontal or vertical) and is compatible with all portable air conditioners or dehumidifiers. Prevents cooling air from escaping - Built with special TU fabric for insulation and treated with a new heat-insulating bleaching process. Blocks cold air loss and reflects sunlight and heat outward, helping the room cool faster, saving energy and reducing costs. Full, reliable seal - Delivers a dense, gap-free installation thanks to the material and reinforced adhesive tape. Prevents cold air from leaking and blocks insects from entering, providing effective protection. Enhanced design for reliable fit - Features precise cut and milling areas for easy adjustment without distortion. Texture treatment near the outlet prevents the tape from peeling after the hose is inserted, reducing gaps. Use scenarios - Sealing around the exhaust hose of portable AC units in standard windows for a tighter seal and improved cooling. - Suitable for horizontal or vertical sliding windows/doors in homes or apartments, offering flexible installation across different configurations. - Helpful in rooms with strong sun exposure or heat transfer, improving cooling efficiency and reducing energy consumption.