Lasko 2155A 16" Electrically Reversible Window Fan, 3-Speed

"The 16"" Electrically Reversible Window Fan powerfully circulates air through two to three rooms. Plus, its exclusive Storm Guard™ feature allows you to close the window behind fan for safety and security during inclement weather or while you're away. "

Three, Whisper-Quiet Speeds

Powerful, 16", Three-Paddle Blades

Electrically Reversible Motor with a Simple Turn of the Dial

Fits Windows 26" to 34" Wide and 22" High and Larger