Holmes delivers powerful home ventilation with the 9 Inch TwinBreeze Reversible Window Fan. This 9 inch window fan features twin high-performance blades that automatically reverse to function as an intake fan to pull in cool outdoor air or as an exhaust fan to remove warm stale air. Designed to improve airflow in bedrooms kitchens offices and living spaces this reversible window fan helps maintain balanced air circulation throughout your home. This 3 speed window fan includes push-button controls and a remote control for convenient adjustment from across the room. The CleanBreeze removable back panel allows quick access for cleaning dust and debris to help maintain efficient airflow and long-term performance. Two built-in extender panels allow this adjustable window fan to fit most double-hung and slider windows up to 35.5 inches wide. The water-resistant construction supports reliable operation during light rain while quiet performance operating as low as 47 decibels keeps rooms comfortable without di