Thin Leading Edge Tile VentThe Manthorpe Thin Edge in line tile ventilator is designed to provide a quick and simple solution to the problems of roofspace ventilation and mechanical extraction soil stack termination through a roof covered with thin leading edge, large format concrete tiles. The vent is designed to replace a single tile and maintain an unbroken appearance to the roofline whether used at high or low level. The tortured path through the 4mm louvred grille and