Vertical Telescopic Window Sash,Waterproof Window Exhaust Fan, Adjustable Speed, Tool-Free Installation, Suitable for Hot Areas, Smoky Spaces,Humid Environments black 13.8-15.7in/35-40cm

Introducing the innovative vertical retractable window sash exhaust fan – the ideal choice for efficient air circulation! This box-type exhaust fan features a retractable, ultra-slim design, easily extending 5cm/2in to fit various sizes of sliding windows. Installation can be completed in minutes without tools. No drilling or complicated setup required!Experience the powerful ventilation of our adjustable-speed electric fan, with a strong airflow that quickly removes smoke, moisture, or stale air. Especially suitable for hot regions, smoky places, and humid environments, it actively lowers the temperature, drawing in fresh air and expelling heat, making it a compact air conditioner alternative.This small, upright ventilator is perfect for multiple rooms, especially bathrooms, garages, kitchens, and bedrooms. Its quiet operation ensures a comfortable environment, cooling the bedroom at night without disturbing others. Its waterproof construction allows it to withstand humid conditions.Note: Please confirm the layout between windows in advance. For accurate data, multiple measurements can be taken to avoid incorrect size selection.

• Drill-free recessed installation: Our innovative three-stage clamp structure secures your indoor air quality in seconds; the 2-inch (5 cm) retractable spring mechanism ensures a tight, seamless fit with sliding window frames, requiring no tools or permanent modifications.
• Quickly eliminates odors and smoke: This directional window fan boasts a powerful 2800 rpm speed and 98 cubic feet per minute airflow, quickly removing kitchen fumes, cigarette smoke, and pet odors; ideal for poorly ventilated spaces such as attics, garages, and basements.
• Flexible airflow control: The stepless speed controller easily adjusts airflow from a gentle breeze to powerful cooling, with no fixed settings. The sash's reverse airflow function (hidden within the stepless speed controller) caters to every season and different needs—bringing in fresh air in spring and expelling hot air in summer.
• Reversible airflow and weatherproof structure: This sash features a reversible airflow design, supporting both intake and exhaust modes. The aluminum alloy frame with a stainless steel mesh cover allows for complete cleaning. Its slim 4cm thickness ensures it won't obstruct the normal opening of windows.
• Suitable for a variety of scenarios: from removing kitchen fumes and reducing pet odors to dehumidifying bathrooms and ventilating smoky rooms, this window exhaust fan is a versatile home ventilation solution. Ideal for apartments, offices, studios, and any place that needs improved air quality and a fresher atmosphere.