The RW series are an evolution of the WP.  Motor all in one like a Tunze but the structure looks more like a Vortech.  They apparently have a wider flow pattern than the WP series and the controllers can talk to each other wirelessly to sync up pumps etc. 
		
	
		
		
		
		
		
	
		
			
			
			
			
			
			
			
			
			
				
			
			
		 
		
	
	
	 |