We added three bays onto an existing three bay Redpath 9.2m Arch structure at 36m long. One bay has 30% green shade cloth, and the other two bays have clear film. Inside this structure we made a quarantine area that is 12m deep by nearly two bays wide. The structures are used for nursery and propagation purposes.
The venting is by roll up walls and gable end vents, which are all manually operated.