Retractable Window Exhaust Fan – Secure, Tool Installation for Versatile Ventilation Key Features: Retractable Design for Fit Equipped with 5 cm retractable technology and a threestage caliper structure, this exhaust fan securely clamps onto window frames using thickened springs to prevent slipping or falling. Compatible with window openings from 35 cm to 135 cm, offering flexibility without the need for tools or permanent modifications. Multiple Size Options for Universal Compatibility Available in retractable sizes ranging from 35 cm to 135 cm to suit most standard window frames. Simply measure your window opening and select the correct size for a precise fit. Includes power supply for dependable operation in a variety of settings, such as home, kitchen, bedroom, or office spaces. Punch Mounting for Quick Setup Designed for tool installation, this exhaust fan clicks securely into place without drilling or altering your window. Fits onto the window edge without interfering with opening or closing functions. Suitable for both sliding and casement windows, making it adaptable for use anywhere. Easy to Install and Maintain Clamps firmly to the frame for stable, dropproof performance. Detaches quickly for direct flushing or dust cleaning. Supports left, right, horizontal, or vertical installation with no position restrictions. Use Scenarios: 1. Kitchen Ventilation – Quickly expels cooking smoke and odors while maintaining window functionality. 2. Bedroom or Office – Enhances air circulation for a fresher, more comfortable indoor environment. 3. Rental Apartments – Installs without damage, making it ideal for temporary setups where permanent changes are not allowed. Specifications: Compatible Window Widths: 35–135 cm Retractable Range: 5 cm adjustment with threestage caliper design Mounting Method: Tool, springloaded clamps Orientation: Left, right, horizontal, or vertical mounting Suitable for: Home, kitchen, bedroom, office, and similar indoor spaces Includes power supply for immediate use This window exhaust fan combines secure installation, wide compatibility, and easy maintenance to deliver reliable ventilation wherever it is needed.