4.72-9.45 Inch Waterproof Vertical Window Exhaust Fan, DIY Modular

Flexible DIY MatrixExpand your setup anytime, easily snap window fans into a long row or a square, mix and match, you can always buy more later to window fans, you can keep adding more units in the future to change the shape | Pre Purchase MeasurementEach window fans is 4.7" x 4.7", and this 2-pack combo forms a 4.72" x 9.45" layout, please measure your window before purchasing to ensure a good fit and decide how many packs you need | Installation combinationNo extra tools required! This vertical window fan combo comes with an included screwdriver for quick, hassle-free assembly and setup, everything you need is right in the box to get your layout ready in minutes | Tool Free InstallationRequires no drilling, get your household window fan set up in under a minute, easily hang the window fan on your existing window screens or shutter blinds using the included hooks, then secure it firmly with wire ties, fast, stable, and damage-free installation | Wind Speed AdjustmentWindow fan is with brushless motor, with a maximum speed of 2800 RPM, allowing for 11 levels of wind speed adjustment to meet individual comfort needs, while reducing energy consumption, suits every season and diverse requirements, for exhaust use only | Premium Materials] Built with a sturdy iron mesh and durable plastic, thiswindow fan, It is engineered to withstand daily wear, ensuring long-lasting and reliable use | Compact And Convenient DesignThis window fan features a lightweight design, fits snugly without cluttering your window view or blocking vital light for safety and sturdiness, never interfering with your daily window use for easy storage, transport, or rearranging whenever needed | Multi-Scenario Application It adapts to single/double-hung, sliding, or casement windows in any layout, As a dedicated window exhaust fan, it works powerfully to effectively expel stagnant air, smoke, and unwanted odors from your indoor environment, and improving the air quality of the entire house