I just noticed the concrete wall you might want to think about sealing it up with a good coating you dont want the salt attacking the concrete. You might have this planned but some people dont know how corrosive salt can be on concrete. I did mine with a product called  Varathane "colors in plastics. it is strong flexable and will resist cemicals so salt should not be an issue.   
 
one warning it is not cheap 
		
	
		
		
		
		
		
	
		
		
	
	
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