Ridge and/or arris ventilation unit, has middle section that is made of fiber, preferably of mineral base such as fiber glass, and is in form of fleece, woven fabric, braided or knitted fabric

摘要

The unit has a middle section that is air permeable, corrugated or serrated or preferably smooth in a longitudinal and/or transverse direction. The middle section is made of a fiber, preferably of a mineral base such as a fiber glass, and is in a form of fleece, woven fabric, braided or knitted fabric. The middle section has a partially corrugated or pointed metallic section in a brim, which is made of aluminum.