Solve your fireplace's smoke problems and get twice the heat output with this revolutionary design. This self-feeding grate reduces wood consumption while radiating heat more effectively, and increases your hearth's safety by preventing flaming logs from rolling out. Handcrafted of hot-rolled steel. <br />12"H x 21"W x 11"D. Made in USA.
TERRA: Carbon Negative - Another challenge is to fashion a firebox that generates a spiral vortex flow of air, gas and flames. First, this increases the mixing of air and gas for more thorough combustion with a rapid, hot, smokeless burn. But also, a longer flame path holds more heat in the kiln to boost temperatures and improve thermal efficiency. A circular flame path around the firebox and retort is better than bottom-to-top vertical combustion outflow.