We've been looking to get something similar to the attached image but can't find anything that's the right size for the space we want to put it. I had the thought that I could just buy the electric fireplace insert and build the fireplace structure to the size I want. My one question here, how does the heating element not catch the plywood I'd use on fire? I've looked up a few plans on this and none of them address that part, and they're all using regular plywood. Am I an idiot (spoiler: Yes. But am I an idiot for asking this question?)