2 or more smaller fans any good ?
Th white sell them. Don't know any more than that I'm afraid.
i see what you mean about being expensive
can you get any good photos?
[quotreeblesykes, post: 112060, member: 1900"]poultry house 4 or 5 ft belt drive fans, you need some airspeed for venting, batting air around with great big slow paddles will do very little
http://www.ausagservices.com.au/air-master-fans.html