Hi there, I'm new to the whole wood stove thing. I'm used to having a handle of some sort to pull down to open/close the flue. I have a fireplace like this one with the pipe coming out the top of it to the ceiling. This is a totally stupid question but where do I open and close the flue on this? There is nothing on the exterior anywhere. Sorry to be so dim, but I figured this is the place to ask after I ran my hand up inside where the stove met the pipe and didn't feel anything. Any help is appreciated. Thanks!