Tapco Inline Slate Ventilators have been designed to provide an aesthetic and unobtrusive solution to roof space ventilation. They can be used at low or high level where the roof construction does not allow eaves or ridge ventilators to be used, or where complex roof shapes do not allow effective cross ventilation. Features and Benefits Suitable for pitches from 20° to 90°. Adaptor available for connecting pipework. 10k airflow. Narrow grille section gives an unobtrusive profile which does not interrupt the roof slope. Colour matched to our Traditional Slate Colour range as standard to blend in with adjacent. Simply installed as part of the normal slating process. Fire resistant. Designated AA rating to BS476: Part 3. Easily converted for use as svp or mechanical extract terminals.