Vertical Window Fan for Sliding Windows, Retractable Window Exhaust Fan with Reversible Airflow & Variable Speed, Drill-Free Slim Window Fan for Bedroom(5.7" x53-57 (14.6x134-146cm))

Key Features

• Vertical Window Fan for Sliding Windows: Drill-free retractable window fan features embedded installation to fit narrow frames without tools
• Reversible Airflow Window Exhaust Fan: Window ventilator allows you to bring in fresh air or pull out stale air from smoky spaces
• Variable Speed Cooling Fan for Bedroom: Stepless speed control provides customized indoor air circulation for comfortable sleeping environments
• Retractable Profile for Custom Fit: Expandable slim window fan adjusts width manually for snug placement within vertical sliding tracks
• Renter Friendly Room Cooling Fan: Versatile alternative to ac fan improves attic ventilation and functions as kitchen exhaust fan window insert