|The Flame Effect Gas Fires by Superior Fires. See the photos, it looks like a TV, I love it! It features sing a safe high efficiency system that burns natural gas and patented catalytic converter technology allows for a flueless design. No need for technical descriptions, the idea is that it converts carbon monoxide into low levels of carbon dioxide and water vapour. These are usually present in fresh air. Common household allergies can be prevented as well, because the converter is neutralising malicious factors in the breathing air, and itself requires no cleaning and can last up to 27 years. And the fires can be adjusted to multiple positioning, on wall or corner.