On Mon, 9 Jun 2014 07:53:56 -0700 (PDT), "I can't do that Dave"   
    wrote:   
      
   >On Sunday, June 8, 2014 12:52:49 PM UTC-7, Clare wrote:   
   >>   
   >> What is the rationalle for mounting them in series??   
   >   
   >Clare, if you look at that link I provided all will be revealed.   
   >   
   >Dave   
   >   
    In a situation where you are not running any appreciable duct length,   
   and virtually no flow restriction, you are running on the right end of   
   the graph where you will get little or no advantage from running the   
   second fan - which is whay I asked what your rationalle was for   
   running 2 fans. The information you posted shows quite plainly that   
   you will NOT gain anything by using 2 fans in series in that   
   application. Now, if you mount one in the attic access, and another in   
   a gable end vent or rooftop vent, you may see enough improvement in   
   air flow to make it worth while (or you may not).   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)