Over Fascia Vents provide discreet eaves ventilation in the roof void. They are lightweight and durable and are easily installed over the fascia in new build or re-roofing applications. They create ventilation by allowing airflow into the roof space and also stop birds and insects entering the void. Each 500mm piece has a male and female end which interlock by simply sliding into place. This produces a 1 meter robust structure that will not crush or warp.