Sonai Exhaust Fan 30 Watt - 25 cm Ventilation Fan with 30 cm Square Mounting Opening - High-Performance and Energy-Saving Motor - Strong Blades Designed for Powerful Airflow with Low Noise Level - Optimal Design for Low Noise During Exhaust - Detachable Oil Cup for Efficient Oil Drop Collection - Easy Installation with Included Power Cord - Free Wooden Frame for Easy Installation - Suitable for Kitchens, Laboratories, and Hospitals - Easy to Disassemble for Cleaning and Maintenance.