The Glidevale TT13 150mm Adaptor is a high-performance roof ventilation accessory designed to provide a secure and efficient connection between Glidevale slate and tile vents and 150mm ducting systems. Suitable for use with mechanical extract ventilation (MEV), heat recovery ventilation (MVHR), and soil vent applications, the adaptor ensures a continuous, weatherproof airflow path from the roof space to the external environment. Its simple snap-fit design allows for quick installation while maintaining airtight performance and compliance with current roofing and ventilation standards. Engineered for compatibility with Glidevale G-Range roof vents, the TT13 adaptor offers a reliable solution for both residential and commercial roofing projects where effective ventilation is essential.