Roof ridge ventilation device, has pleated side strips of hand deformable metal mesh or metal fibre web material along its length edges

摘要

The length edges (4, 5) of the device comprise a metal mesh or metal fibre web which is air-permeable and deformable by hand. These side strips (2, 3) have pleats, notches or folds extending at right angles to their length edges. The length edges of the device can be pressed by hand against the inside of the roof.