I really like the idea and think that it has possible real applications. The problem I see is the size of the fan... the one Brent uses for his is a 6 inch fan and mine use 3 inch fans to do the work. I would be concerned that the small fan wouldn't do much except create a draft rather than actually circulating the air. I have a new design that I am working on but it is meant to be built in at the time of construction so would not fit the application like you have there. I have no idea how to draw the pics on the computer like the one you did aboe or I would show exactly what I was talking about.
Mark, if yours isn't keeping the glass clear, it's probably not moving enough air. I run mine on cycles because leaving it on constantly actually tends to dry things out too much, but when the fan comes on the glass clears in a couple of minutes. I need to perfect this new design and figure out how to draw those pics....
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Hi 
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