Delta T Corporation, doing business as Big Ass Fans, makes six-to-24 foot diameter ceiling fans. Big Ass Fans pioneered the high-volume, low-speed (HVLS) airflow—an entirely new concept— which was the key to making spaces more comfortable and efficient. Applications for the company's oversized products include environmental control (circulating hot or cold air) in immense spaces such as warehouses, factories, commercial spaces, and homes. It has offices in Australia, Singapore and Canada. Some customers include Coca-Cola, Amazon, Toyota, FedEx and Ford, among others. The company was founded in 1999.