I believe it's a 4' Protostar unit. Just tested it today and it fires up fine with no flicker. I know these are probably very out of date, but maybe some of you grow "other" things in your free time . 2x96w power compacts have ballasts too but it never really needed them. Free in Oakland for pickup.
		
		
	
	
		 
	
				
			 
				
 
 
		 
 
		 
 
		 
 
		