Tile roofs using Uni‑Plain vents need a connection that respects both covering and airflow. This adaptor seats to the vent body and provides a smooth, airtight path to ducting so extraction remains on spec without added noise. Also Adaptor for Uni‑Plain tile vents forms a neat, airtight interface to ducting. It keeps flow smooth and the roof detail clean. Also As supplied Tile roofs using Uni‑Plain vents need a connection that respects both covering and airflow. This adaptor seats to the vent body and provides a smooth. Also airtight path to ducting so extraction remains on spec without added noise.. Adaptor for Uni‑Plain tile vents forms a neat. Also As supplied airtight interface to ducting. It keeps flow smooth and the roof detail clean.. In practical terms, Tile roofs using Uni‑Plain vents need a connection that respects both covering and airflow. This adaptor seats to the vent body and provides a smooth. airtight path to ducting so extraction remains on spec without added noise. Adaptor for Uni‑Plain tile vents forms a neat.