In normal use the grille system allows air to be circulated freely throughout the building. The system is designed with intumescent grilles meaning that in a fire situation they swell when exposed to heat and provide a fire barrier to restrict the passage of hot gases.
Suitable for use with fire rated doors
System is maintenance free and easy to install. See the Installation tab for more details.
Faceplates come in two powder coated finishes: white or silver
Providing the product is installed in accordance with the installation instructions section of the guidance document the product is guaranteed for a period of 10 years.
Independently tested by Bodycote/Warringtonfire for 60 minute fire resistance (also suitable for 30 minute fire resistance)
Intumescent material is totally unaffected by water, is robust, ‘non-flaking’ and will not tear easily
When creating the aperture for your intumescent air transfer grille it should be noted that you will need to account for the 6mm hardwood liner that is required in most cases. This means you will need to add 12mm to each dimension to establish the size of the aperture. For example, a 300x300mm grille will need a 312x312mm aperture, and a 112x225mm grille will need a 124x237mm aperture.
Please note: First, check that your door is suitable for the fitting of an air transfer grille. If so, most doors will require the fitting of the hardwood liner. Your installer should be able to determine if the density of the core material is suitable that it does not need the hardwood liner - if in doubt, fit the liner as per the guidance document.