Retractable Vertical Window Fan, Window Fans for Sliding Windows, Reversible Airflow Window Exhaust Fan,Adjustable Wind Speed,Ultra Quiet, Tool-Free Installation for Bathroom Kitchen Bedroom

1. Core Positioning: A no-drill, retractable window ventilation fan designed for smoke exhaust in moxibustion rooms and strong air extraction in game rooms. Combines quiet operation, waterproof design, and multi-scenario use, allowing fast installation without modifying your window.2.Key Technical Specifications:(1)Base Dimensions：①　Width: 16 cm (6.30 in)②　Thickness: 4 cm (1.57 in)(2)Adjustment Range：Built-in 5 cm (1.97 in) spring extension, no custom sizing required3. Key Features & Benefits:①　Reversible Airflow②　High-Quality Materials③　No-Drill & Embedded Installation④　Flexible Window Fite⑤　Powerful & Quiet Ventilation⑥　Durable & Weather-Resistant4. Sizes & Compatibility Options(1)Fan Quantity: 2 / 3 / 4 / 5 / 6 / 7 / 8 / 9 fans (8 configurations available) (2)Window Height Range: 35 cm – 135 cm (13.78 in – 53.15 in) (3)Compatible Window Types: Sliding windows only(Not suitable for casement, awning, or outward-opening windows) 5. Application Scenarios(1)Primary Use:①　Smoke exhaust for moxibustion rooms ②　Ventilation and odor removal for game rooms / mahjong rooms (2)Home Use:Bedroom, kitchen, bathroom, attic, pet rooms (3)Commercial / Industrial Use:①　Auxiliary cooling for electronic equipment, cabinets, enclosures, and medical devices ②　Ventilation for small shops and workspaces 6. Installation & Usage Tips(1)Measure the inner height of your window frame before purchasing to select the correct size. (2)Installation steps: ①　Measure window height ②　Insert the fan into the upper and lower window frame ③　Allow the spring to automatically adjust for a tight fit ④　Connect the stepless speed controller to operate (3)Regularly remove and clean the protective mesh to maintain airflow efficiency and extend product lifespan

• 1.Reversible Airflow: window fan reversible airflow supports intake and exhaust. Use as window exhaust fan, window fans with exhaust and intake, or exhaust fan for window to remove heat and odor.
• 2.High-Quality Materials: Built with a sturdy aluminum alloy frame and magnetic levitation bearingsfine mesh protection, and a stable motor for reliable performance. This window fan vertical fit bathroom window exhaust fan use while helping block debris and insects.
• 3.Technical Data: Voltage: 12V - Current: 0.35A per fan - Adjustable Speed: 0-2800 RPM - Airflow: 98 CFM per fan - Noise: 16–39.8 dB (depends on speed) - Includes power adapter
• 4.No-Drill & Embedded Installation: window fan vertical installs with spring structure and embedded design, no tools needed. Secure fit without damage, perfect as window fan vertical fit and fan for window use.
• 5.Flexible Window Fite: window fans design with adjustable frame fits different heights. Works as vertical window fan, sliding window fan, and vertical window fan for sliding windows, ideal as small window fan. Suitable for kitchen, bedroom, and garage, improving airflow in any space.