AmacoŽ offers three KilnVents for use on ExcelŽ kilns. Each offers the exclusive OrtonŽ patented downdraft system that produces truer colors by replacing carbon monoxide while adding oxygen needed for brighter reds, greens, golds, and yellows. It also effectively mixes hot gas from the kiln with room air to provide a cool exhaust that's safely vented outdoors. AmacoŽ KilnVents also:
Create more uniform temperature - circulating the hot air allows items at the bottom of the kiln to receive the same heat as those at the top
Reduce firing problems - oxygen brought into the kiln helps burn out carbon and organics in bodies and glazes reducing crazing, pinholing, and porcelain mildew
U.S. Patent No. 4,863,374 and 4,978,295
Edward J. Orton Jr. Ceramic Foundation