GODNOEI Vertical Sliding Window Exhaust Fan 43.3-45.3 Inch

Designed for sliding windows with an inner frame height of 43.3"-45.3", this vertical window fan features a 1.97" extendable spring mechanism for a snug, gap-free fit. Ideal for pet areas, smoky spots, or any space needing ventilation, it effectively expels stagnant air and odors. Installation is quick and tool-free, requiring only the extension and tightening of the spring-loaded frame. The slim design allows for smooth window operation, and the fan includes 5 high-performance fans behind a stainless steel mesh. Control airflow effortlessly with the stepless speed controller, offering flexible, reversible airflow for year-round use.