Automatic Ventilation Kit

Optional add-on for the Bobcat high tunnel kits. This automatic venting system has a gable peak exhaust fan and motorized shutter to alleviate excessive heat buildup in winter tunnels. Includes: 20" Shutter Fan w/ Cord (2,750 CFM), 24" Motorized Shutter w/ Cord (2,800 CFM), Corded Single Stage Thermostat. NOTE: 110 V power at your greenhouse is required for use. Does not provide total cooling; roll-up sides in warm weather are still required.