Ducting

Flexible, wire reinforced aluminium ducting to channel used,hot, humid air out and fresh,cool air into the growing area.  Keep the ducting as straight as possible with as few crinkles and bends as feasible to improve air flow and efficiency.  Have gently bends as one 90^o bend effectively adds 3m of ducting to the air flow.  Use insulated ducting where temperature or noise are an issue.