Retractable Window Exhaust Fan – Secure, Tool Ventilation Solution Key Features and Benefits: Retractable Design for Fit Features advanced 5 cm retractable technology with a durable threestage caliper structure. Thickened springs securely clamp to window frames, preventing accidental falls. Designed for a precise fit in window openings between 35 cm and 135 cm. No tools or window modifications required for installation. Multiple Size Options Select from the adjustable 35–135 cm range to match your window dimensions. Simply measure your window frame and choose the size that fits . Includes power supply for immediate use, making it an adaptable choice for ventilation in homes, kitchens, bedrooms, and office spaces. Universal Punch Installation Installs instantly by clamping onto window edges without drilling or permanent alterations. Fits both sliding and casement windows without affecting their ability to open or close. Ideal for users needing a quick, noninvasive ventilation solution. Easy Setup and Maintenance Clamps securely for stable performance and dropproof operation. Detaches easily for straightforward cleaning—either by flushing or wiping. Supports multiple installation orientations including left/right, horizontal, or vertical, with no restrictions on positioning. Practical Applications: 1. Kitchen Ventilation – Removes cooking odors and excess heat quickly without requiring structural changes or complex installation. 2. Bedroom Airflow – Improves air circulation to maintain a fresh and comfortable environment, even in rooms without builtin ventilation. 3. Office Cooling – Offers an efficient, nondisruptive way to enhance airflow in workspaces, helping maintain comfort and productivity. Specifications: Adjustable fit for windows from 35 cm to 135 cm wide 5 cm retractable technology with threestage caliper structure Thickened spring clamps for secure hold Compatible with sliding and casement windows Power supply included Tool, punch installation Supports multiple installation orientations This Window Exhaust Fan combines convenience, adaptability, and reliable performance to provide an efficient, hassle ventilation solution for a wide range of environments.