The Manthorpe Flat Edge in-line tile vent is designed to replace a single tile and maintain an unbroken appearance to the roofline whether used at high or low level. Used to provide a quick and simple solution to the problems of roof space ventilation and mechanical extraction/soil stack termination through a roof covered with Calderdale Edge tiles. The tortured path through the 4mm louvred grille and internal weathering geometry is designed to maintain a 10,000 mm2 of airflow whilst channelling any water ingress out of the vent and on to the roof covering. Technical Length: 418mmOverall width: 335mmMinimum Pitch: 20dgMaximum headlap: 100mmMaterial: uPVC & PolypropyleneColour: Grey