Does the Sunshine Greenhouse have good ventilation and thorough air circulation?
The roof vent allows air to escape at the hottest point, the roof ridge. Cooler air enters the base vent, creating a chimney effect, and thus circulating cool fresh air throughout the greenhouse. The convenient Dutch door provides additional ventilation control and easy access. Automatic solar-powered vent operators on the roof and base vents contain a paraffin (wax) cylinder that expands when the temperature reaches 65 degrees F, pushing the vent open to its fully opened position at about 85 degrees F. As it cools, the paraffin contracts, and the operator’s spring draws each vent closed. It is easily detachable for manual operation.
