NSHEV Roof Louvre (NRL)
The NRL is an economical low profile louvre specifically designed for both smoke and heat exhaust and natural ventilation applications.
The NRL has been tested to BS EN 12101 – Part 2: 2003: Specification for natural and heat exhaust ventilators. When closed, the vent is weatherproof and tested to BS 5368 Parts 1 & 2.