Home depot and Rona both have carried it.  It is called "Bird Wire/Netting" found in the gardening section.  The edges are screen door edges and corners with the rubber tubing. CHEAP! and quite easy to make! 
		
	
		
		
		
		
			
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				Red Coral Online Store   
www.redcoralaquarium.net
45 Gallon Cube with 10 Gallon Sump, Lighting 8 bulb T5, Vertex IN 80 Skimmer 
-2 Occelaris Clowns, Engineer Goby, RBTA, Peppermint Shrimp
			  
		
		
		
		
	
		
		
	
	
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