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Intumescent Fire Grilles

Intumescent Fire Grilles by Astroflame

Astroflame branded Intumescent ventilation grilles for installation in solid timber fire doors & solid block walls. Suitable for mounting up to 1,000mm (1m) from floor level. Top edge of Grille should be no higher than 1,000mm (1m). The Fire Grille comprised of a intumescent core within a galvanized steel frame with vermin proof 6mm steel mesh fitted to both faces. Suitable for fitting up to 1,000mm (1m) from floor level. The top of the grille should not be higher than 1000mm from the floor. The design allows a free area of 80% approximately. See our Free Area table in our product data sheet for guidance. 

All square and rectangular grilles are available to suit 30 minute or 60 minute on previously fire rated applications. Please note the fire grilles is tested with a Louvered Steel Air Transfer Plate either side. Free area table seen in the Product Data Sheet PDF file is for the Fire Grille only at approx. 80%. If you require the free area for the grille and face plate either side please contact us.

Maximum single grille size is 600 x 600 mm. Line the aperture with Fire & Acoustic Rated Intumescent Mastic - CE Marked and mechanically fix the Grille in place with steel screws in each corner and at 150mm centres both sides. Don't forget to order your matching cover plates (Air Transfer Plates) which are available, please see the Related Product seen at the bottom of each grille product page.

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Fire Grilles 100x100mm to 250x250mm

Tested to BS 476: Part 22 1987 | 60 minutes fire rating | Approx. 80% Free Area | For use in solid timber fire doors & solid block walls

Fire Grilles 300x100mm to 350x350mm

Tested to BS 476: Part 22 1987 | 60 minutes fire rating | Approx. 80% Free Area | For use in solid timber fire doors & solid block walls

Fire Grilles 400x100mm to 600x600mm

Tested to BS 476: Part 22 1987 | 60 minutes fire rating | Approx. 80% Free Area | For use in solid timber fire doors & solid block walls