I just purchased a used wood insert and have finished the basic installation. As I've inspected it I've decided that it could use a replacement gastket on the door. My problem is that I can't figure out "who" made the insert. The only marking anywhere is the plate on the front door that says simply "Big Ben". I don't know if that's the manufacturer or more likely the model. I'd like to identify the manufacturer to see if I can track down original parts etc.. Has anyone ever heard of a "Big Ben"? Any help is appreciated.