Spectra Instruments Pte Ltd introduced Singapore and Malaysia to Big Ass Fans® in early 2007. The Big Ass Fan Company designs, tests and manufactures air movement solutions for industrial, agricultural, commercial and residential settings. Large diameter fans range from 2.4 to 7.3m in diameter and use low-horsepower motors to provide occupant comfort and energy saving year round. Big Ass Fans use their immense size - not speed - and patented airfoils to move a massive amount of air for very little energy.