I realize this is an old thread, but a suggestion is since you father grills very little, if at all, perhaps finding an 18" grill in really good shape on FB marketplace or CL might work. If needed you could take a little time to clean up. If these ideas appeal to you would still have 2x22 inch grills and you dad would have a grill that is perhaps more appropriate to his grilling needs. Since the last post I saw was dated in June this may be far to late an idea.