I googled a question on what a handle was on my fireplace and someone actually posted the same question and a picture back in 2010 to this site and explained what it was so I decided to ask my question here....the only thing not explained was what direction was open/closed. This lever is on the right side of the fireplace and opens a vent to let air in or something like that. Anyone know what is open? Up or down? Can't see this vent opening and I'm assuming it's at the bottom.