Vertical Window Exhaust Fan for Sliding Windows, Tool-Free Expandable Ventilation Fan with 3.9" Retractable Panel, 0-2800 RPM Variable Speed for Bedrooms, Smoke Removal 15.4~19.3in/ 39~49cm

Vertical installation for sliding windows Ventilating for pets Horizontal installation for casement windows Parameter Model: Punch-free exhaust fan Voltage: 12V (220V to 12V) Current: 0.35A (peak per fan) Speed: 0-2800 rpm (adjustable speed) Air volume: 98CFM (per fan) Noise: 16~39.8db (due to speed changes) Bearing: Magnetolev bearing Material: aluminum alloy frame + stainless steel mesh Shipping List 1* Window Ventilation Fan

• SEAMLESS FIT FOR SLIDING WINDOWS: Engineered with a 3.9" retractable panel and a heavy-duty spring-loaded caliper clamp, this vertical window exhaust fan securely locks into your window track. It guarantees a safe, vibration-free, and stable ventilation seal without gaps, keeping the outdoor weather out while exhausting indoor air.
• POWERFUL SMOKE & ODOR EXTRACTOR: Crafted with a premium, rust-resistant aluminum alloy frame that tightly grips the window. This dedicated sliding window fan instantly improves indoor air quality by pulling out stubborn odors and heat. The ultimate ventilation system for smoky spaces, stuffy bedrooms, hot kitchens, dorms, and pet rooms.
• 3-MINUTE TOOL-FREE INSTALLATION: Say goodbye to drilling and screws! Our window ventilation fan features a true instant-setup design. Simply expand the spring-loaded frame, snap it into your window track, and let it grip. It can be easily removed or relocated at any time without causing zero damage to your windows.
• 0-2800 RPM VARIABLE SPEED CONTROL: Tailor your airflow effortlessly with our precision stepless speed dial. Ranging from a whisper-quiet soft breeze for sleeping to a powerful 2800 RPM cooling fan to exhaust extreme heat, this adjustable window fan has no fixed settings, adapting perfectly to every season and diverse cooling requirements.
• WORRY-FREE PURCHASE & SIZING GUIDE: Measure Before Buying! Please check our product dimensions guide in the images to ensure a perfect fit for your space. To help you get started quickly, we provide a step-by-step troubleshooting video to resolve any loose guards or initial setup issues in minutes. Backed by our 24/7 responsive customer support for a risk-free experience!