Adjustable fit for window seal: This air conditioner window kit features an adjustable design that fits window openings from 24 to 36 inches long and 10 inches wide, making it suitable for most portable AC units and providing a seal around the exhaust. Complete sealing solution: The package includes 1 window wrap cloth, 2 fastening tapes, and 1 roll of sealing tape, providing all components for effective installation and reliable insulation against heat transfer. Effective climate control: With a practical sealing design and drawstring closure, this AC vent sealing kit helps minimize hot air backflow and keeps conditioned air inside your room. Long lasting construction: Made from sturdy polyester material, this window ventilation kit resists tearing and withstands weather elements, delivering dependable performance across multiple seasons. Use scenarios: Cooling a living room with a portable AC unit installed in a window within the 24 to 36 inch length and 10 inch width range, creating a seal around the exhaust. Temporary cooling in rental apartments or dorm rooms where permanent window modifications are not allowed, thanks to the adjustable, removable seal. Blocking hot outdoor air and reducing energy loss in drafty rooms during transitional seasons by sealing the window exhaust when the portable AC is in use.