For walls and ducts; in the event of a fire the slats fuse together and give a complete seal in two minutes.

A range of heavy duty intumescent grilles.

Features and benefits:

• Heavy-duty intumescent air transfer grille for doors, walls, ducts and floors.
• In the event of a fire, the slats fuse and give a complete seal in 2 minutes.
• Gives up to 2 hours resistance to fire.
• EI rating of 2 hours when used with a cover grille.
• Tested in accordance with BS 476 Parts 20 and 22:1987, BS EN 1634-1:2014, BS EN 1364-5:2017 and NEN 6069:2005+A1:2016.
• Galvanised steel framework protects graphite intumescent core by preventing inward deformation.
• Suitable for use in external walls and areas with high humidity.
• May be used horizontally or vertically.