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Pyrogrille – Square and Rectangular Air Transfer Grilles

Pyrogrille 100 is designed for use in fire rated doors, walls and in ducts, where there is a need for free air movement in normal conditions. However, when subjected to heat in a fire situation, the intumescent swells to many times its original size and seals the aperture, forming a solid mass.

  • Tested in flexible walling and ducting to BS476: Part 20: 1987, offering up to 120 minutes fire integrity
  • Tested in timber doors to BS EN1634-1:2014, offering up to 60 minutes fire integrity
  • Large range of standard and non-standard sizes available to suit all applications*
  • Offers approx. 60% free area
  • No moving parts therefore no maintenance required
  • Slim design; only 38mm thick
  • Can be supplied with a wide range of decorative covers if required
  • Simple to install in doors, walls and ducts
  • Standard finish is black but other colours are available
    *Check with door manufacturer’s fire test evidence for maximum size permissible.

Technical

Square and rectangular fire rated air transfer grilles for fire resisting doors

Description

Pyrogrille 100 are manufactured using components made from intumescent material in a matrix formation. The thickness of the units is 38mm

Decorative steel or aluminium cover grilles are available for square and rectangular units; please consult our sales office regarding sizes available.

Performance

Pyrogrille 100, have been, subjected to fire resistance tests in accordance with BS 476: Part 20: 1987 in walls, and BS EN 1634-1: 2014 for doors.

Applications

Pyrogrille 100, is fitted into timber fire doors, or stud partitions, using a mechanical fixing, through the side component of the unit.

Gaps around the perimeter of the Pyrogrille 100, are sealed, using Pyromas A, intumescent sealant.

Finishes

Standard colour is black

Maintenance

With no moving parts, the Pyrogrille 100 does not require maintaining. However, a periodic inspection, and wipe down with a damp cloth, is recommended. The product, should not be immersed in water.

Ordering

Please use width by height (W x H) when ordering.

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