What is the difference between this and the rad 8 visual flame?
The RHL2 log set is a purely decorative accessory, while the RAD8 is more of a functional add-on. The RAD8 is a pair of 6" tall A-frame type supports that are installed over the burner tube. When heated, the RAD8 absorbs/radiates heat out into the room. It will continue to do so after the furnace is turned off, providing a source of "free heat" until the RAD8 completely cools.