Feature: Efficient Ventilation: The roof exhaust fan features a 360W high-power motor and 1393/1700 rpm speed to quickly expel hot air. With stable, quiet, and energy-saving operation, it meets various heat dissipation needs and ensures comfort and device security Sturdy & Long-Lasting: Comes with a lightweight aluminum alloy housing cap, a deflector, and a sturdy base, our attic exhaust fan is high-strength, corrosion-resistant, and stable. It withstands extreme climates and ensures reliable performance over time Adjustable Airflow Speed: The garage exhaust fan is equipped with two intelligent speed controllers, and the airflow speed can be flexibly adjusted within 3000/3900 CFM, easily meeting different ventilation needs to ensure comfort and energy efficiency Sealed Waterproof Design: The kitchen exhaust fan adopts a sealed waterproof structure and a deflector for fast water drainage, quiet operation, and prolonging durability. It ensures efficient and stable ventilation even under heavy rain and strong winds Compact Structure: This bathroom exhaust fan has a compact and space-saving body, suitable for space-limited space. It is ideal for hospitals, schools, hotels, warehouses, agriculture, and restaurants, flexibly meeting different ventilation needs Package Content: 1 x Roof Exhaust Fan 1 x Speed Controller 1 x User Manual