Proper ventilation is one of the most important parts of designing a successful greenhouse.  The hot summer sun can quickly overheat a greenhouse if proper ventilation is not provided.  At the very least, a good greenhouse requires vents near the highest point because heat rises and should be allowed to escape in the summer.  Shutter vents and exhaust fans installed in the peak on gable ends of the greenhouse work very well.

We carry only the highest quality aluminum and PVC fans and shutters.  These are not the flimsy, thin fans and shutters found with most greenhouse kits.  Our shutters have a strong extruded aluminum or PVC frame and our fans are designed for professional greenhouse installations.

Determine the proper size ventilation system for your greenhouse by calculating the cubic feet of air space in the growing area and plan to replenish that once a minute for optimum cooling in summer.