I'm starting to put the Summit in the fireplace.  I need a 15 foot chimney and I'm going to be close.  Do I measure from the bottom of the firebox or do I just count the length of the liner?  Also,  how tall should this be ideally?  I know 15' is the minimum.
Thanks,
Karl
	
		
			
		
		
	
				
			Thanks,
Karl
	
	