They are similar in appearance, but have substantial differences. Our Super Duty Industrial Fans are a clean sheet design to specifically move big air from overhead, and address the special needs of a ceiling fan with regards to airflow and safety. The motors are suitable for vertical orientation, the airflow shape provides even cooling, the round frame is shaped specifically to resist twisting and distorting when hung, and the steel crossbar frame holds it all together firmly and provides a safe mounting system.