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CT Greenhouse high tunnels are NRCS-eligible, built to CPS 325 · see how EQIP funding works
Whether you are looking to retrofit an existing greenhouse or build a new high tunnel from the ground up, these aluminum shutter vents will provide much needed ventilation for you crops. They can be manually opened and closed or set up with either and electronic or solar vent operator for more automation and environmental control. 
 
Pair with Motorized shutter kits and a Thermostat or for non-powered applications, use wax cylinder Solar openers
 

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