NSHEV Roof Louvre (NRL)

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.

Performance Features

  • Tested to BS EN 12101-2:2003.
  • Resistance to air leakage and rainwater is tested to BS 5368 and BS 6375.
  • Lifecycle tested to class RE1000 under BS EN 12101-2: 2002.
  • Tested to withstand wind loads of class WL1500 and snow loads of up to class SL500 under BS EN 12101-2:2003.
  • A wide range of control options are available.

Technical Data

Base Assembly 1.5mm Press formed aluminium
Sides & Ends 1.5mm press formed and cleated aluminium
Louvre Blade Options Options of:

1.5mm single skin aluminium

1.5mm double skin with 25mm PIR

2.0mm translucent double skin polycarbonate

Louvre Blade Pivots Solid aluminium bearings in shouldered nylon bushes for maintenance free operation
Finish Options Mill finish aluminium or Polyester powder coated options
Optional Accessories Birdguards / Security Bars / Insect / Internal closure pieces and flashings
Control Options 24 V DC


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