GUIDELINE 12 tunnel Ventilation for Dairy Tie Stall Barns details Tunnel ventilation as an effective means of providing increased air exchange and high air velocity for improved hot weather cow comfort.

A tunnel ventilation system can be easily installed in simple unobstructed rectangular barn layouts. However, with some advanced planning, creative thinking, experimenting, and modification of inlet size and location, this type of ventilation system can also be installed in barns with obstructions or unusual shapes.