1
Q
Hinged ventelators.
A
One pane hinged at the edge.
2
Q
Louvre ventelators.
A
Small, multiple panes that move in unison.
3
Q
Alternate ventilators on each side of the roof.
A
Air enters from one side, diverted around the greenhouse and expelled from other side.
4
Q
Ventilators at floor level and in roof.
A
Warm air in the greenhouse escapes through the roof and is drawn in from the floor.
