The AIR2500 (ref) over fascia ventilator has been designed to establish a clear airflow into the cavity between the fascia board and the felt; this makes it a great choice for situations like re-roofing or a new build.

The AIR2500 (ref) has a grill specifically designed to be wide enough not to be blocked by water droplets, debris or paint, but still able to stop large insects from gaining access.

The AIR2500 (ref) vent supplied can be assembled in 1m sticks.

1m x 25mm: Free area equivalent to a 25mm gap.
Pack Size: 25

Datasheet (AIR2500)