High Tunnel Greenhouse Vents

Ken-Bar's High Tunnel Vent is an end-wall installed system that provides supplemental ventilation for extremely hot conditions. During moderate weather, high tunnels are generally vented by rolling up the sides and opening the doors on each end. However, extremely hot and humid weather often requires additional ventilation, and the best vent position is at the roof or peak of the structure. Ken-Bars High Tunnel Vent provides a chimney-effect movement of hot air out of the tunnel.  *These vents are intended for supplemental ventilation only. They are not the primary mechanism for temperature control in high tunnels. The High Tunnel Vent is constructed of a rigid lightweight aluminum frame and shutter. Each vent comes with two methods for activation: manual and auto-temperature. The manual method is performed with a simple pull-cable, while the auto-temperature opener operates automatically and can be adjusted to open at temperatures between 60-77° F.  The automatic, tempe