Ecofan™ - Lee Valley Tools

Ecofan™ - Lee Valley Tools: "A & B. Intended for wood-burning stoves, the medium-size model can produce up to 100 CFM of air movement, stands 8' tall, and has an 8' diameter brass blade, while the large model can produce up to 150 CFM of air movement, stands 9' tall, and has an 8' diameter brass tri-blade. Both models operate on surface temperatures between 400° and 650°F (205° to 345°C)."