A discreet ventilating tile suitable for clay and concrete plain tiles that provides 6,000 mm2 effective ventilation area. Features No batten cutting necessary. In-line design. Built in downpipe allows direct ventilation to roof space. Adaptor available for soil ventilation or mechanical extraction. Prevents the entry of birds and large insects. Application Most concrete and clay plain tiles at a roof pitch at or over 35°. High or low level roof space ventilation. Material Polypropylene / PVC. Dimensions Length: 300mm. Width: 330mm. Installation The Uni-Plain Tile Vent is positioned in broken bond format, above the course below and the underlay is marked and cut to accommodate the downpipe. The Tile Vent is then positioned adjacent to the next tile, nailed in place and tiling continued as normal.