If you are looking for a QUIET ECONOMICAL FAN for your system try a PAPST, The US distributer is ebm Industries at 
www.ebm.com.
The Indiana and Kentucky representative is David Neal e-mail
dneal@ebm.com.
			
			www.ebm.com.
The Indiana and Kentucky representative is David Neal e-mail
dneal@ebm.com.
				
		
			