I know it you can't tell by the photo and it says in the description 'vented on both sides'(top?) you can see the top vents on the exposed side if that's it I don't think it would "draw" like the old folks would ask about the fireplace in the old timey houses were supposed to be apt at doing so well. The boxes need the side/end vents for fresh cooler air to enter (lower) and hot air to rise up and exhaust out(top) IMO I guess one could put such but you'd have to have the fiber material filters to put over them too.

Jeff