The small format single pantile 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 a concrete single pantile. The in-line profile helps to maintain an unbroken appearance to the roofline at high or low level. When using the vent for mechanical extraction or soil stack / vent pipe termination; the 4" diameter outlet on the base will connect directly onto one of the GRPA Flexible Pipe range. In-line and discreet low profile design, suitable for concrete Interlocking single pantiles. 4mm louvred flyscreen grille Integral sidelock clip to ensure secure fit Profiles suit all top tile manufacturers. Suitable for use down to a 20 degree roof pitch Fully independently wind tunnel tested