The Ashley Hearth Products AW40 is a high performance wood circulator that is more efficient and cleaner burning than any other circulator on the market. It is EPA Certified to the latest wood stove standards for emissions. It offers a non-catalytic, trouble-free, operating system that is controlled with a burn timer system to provide a clean burn. The AW40 offers an easy access ash pan that makes clean up a breeze. Designed to heat up to 2,000 Sq. Ft. (up to 93,000 BTU?s), this stove circulator will accept wood logs up to 21 inches in length. The AW40 circulator is a safe, durable and versatile heating alternative for your home.