Cooling greenhouses and providing fresh air to plants are the most important functions of greenhouse ventilation equipment like exhaust fans, circulation fans, evaporative coolers, and louvered shutters. All of the fans and shutters we offer are designed for continuous use in wet enviroments like greenhouses. If you need help figuring our what size exhaust fan and intakes to put in your greenhouse, use our online Greenhouse Exhaust Fan Size Calculator. We also carry an extensive line of temperature, humidity, and speed controls to automate your equipment.