Just got off the phone with a nice lady in Vail. She's just had a new Heat-n-glo Cosmo 135 gas insert installed. She is concerned about hearth requirements and I couldn't locate anything in the downloaded manual. This thing is at floor level and she wants to run new laminate flooring right up to it. I told her 16" min. is what I'd shoot for, as far as a non-combustable hearth extension. Figured I'd check and see if anyone here knew what she should shoot for. Thanks, JB