Good thread.

For $17 I got one of these bad boys. There is actually a six inch model. This one is 4". Intakes on either end. First think I did was cellophaned off back end and yessiree she pulled even harder on the one end. Nice and efficient and I must say pretty quiet. Easy to fit up to 4" ductwork. Get the flex stuff at HD. Expands to 8'. Awsome. Larger model possibly indespensable to you big bulb boys at this price.