| Ventilation | Comments | 
|---|---|
| VENTILATION: Exhausting Hot Air From the Greenhouse Peak Install a turbine generator as high as possible with a small fan under it blowing straight up; refer to A83-52 | 0 | 
| VENTILATION: Rate of Exchange On hot days the greenhouse needs one change of air per minute by exhaust fans. A78-606 | 0 | 
| VENTILATION: Size of the Vents They should be at least 10% of the roof area as a minimum. RMH | 0 | 
| VENTILATORS: Non Electric Self-automated ventilator units are moved by a heat-expandible mechanism, they need no electricity and are useful in case of electricity failure; some growers use them only. Ca85(l)-10 | 0 |