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Fire Rated Air Transfer Grille (Intumescent Fire Blocks)

Manufactured from high performance intumescent material that is formed into square or rectangular shapes and contained within a steel frame, for use in fire resisting door sets and compartment walls to provide up to 60 minutes fire resistance.
In normal use the grilles allow air to be circulated and moved throughout the building; however on exposure to heat from a fire the intumescent material swells to produce a fire resistant seal against the passage of fire, smoke and hot gases.
The grilles are easily installed in vertical apertures in doors or walls.
We also supply square or rectangular steel louvered faceplates in a silver finish to provide an aesthetically pleasing appearance.
The product has been independently tested by Bodycote/Warrintonfire to BS 476: Part 22 1987 and EN 1634: Part 2.
Test Reports 146520/146521 & 148053 apply – combined within Assessment Report No. 149511 
IFCC Certificate No. IFCC1001

Available in 5 sizes
150mm x 150mm x 40mm - free area 152cm2
225mm x 112mm x 40mm - free area 161cm2
225mm x 225mm x 40mm - free area 323cm2
300mm x 150mm x 40mm - free area 304cm2
300mm x 300mm x 40mm - free area 614cm2

The StormFlame Central Shop stocks over 70 different sizes of Astroflame intumescent fire grilles, including circular types.

Astroflame Passive Fire Protection Products Logo.


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