Ox Industrial Standing Fan This 20" Industrial standing fan is a very strong product that will give you that cool breeze you need, it can work for long hours because the coil is made of pure 100% copper wire to enable it to work for long hours, the blade is made of aluminum, making it rust free. It's A RUGGED strong fan that can last for so many years. The OX 20" inches Industrial standing fan has an elegant 2-speed selector and a long-life motor. It has height adjustment to fit various heights. With OX, you are guaranteed day after day of superb cooling for a long period of time.it is essential for every home, this product meets the required standard of quality, durability,100% copper coil Rust free aluminum blade Superior Quality Durable Motor Height adjustable 2Blade Industrial Technology for Superior Airflow payment on delivery