On Tue, 12 Aug 2014 08:46:21 -0700 (PDT), wrote:

On Friday, February 20, 2004 5:47:12 AM UTC-8, Dick wrote:
I want to add a few more inches of blown-in insulation to my attic which
contains a 24" whole hose fan venting through 2 vents on the gable end
walls. I am concerned that this new insulation may be blown around & clog
the vents when the whole house fan runs if I do this. Am I worrying
needlessly?

Hi Dick,

I'm in the same situation, would like to know your final result. Would you mind to share? Thanks! John
horizontal or vertical axis fan??? if the fan is vertical axis, i.e.
fan blows UP, won't be a problem. If you are worried throw a typar
sheet over the insulation.