Intumescent ventilation grille ASTRO FIRE GRILLE

  • Fire resistance up to 60 minutes.
  • Vermin proof wire mesh
  • Wide range of sizes
  • Up to 80% free air flow area
  • The maximum size of grille combination: 1500 x 1000mm.
  • The maximum size of a single mesh: 600mmx600mm



Ventilation grille ASTRO FIRE GRILLE, when expanding, forms a tight barrier preventing the passage of flame and gases. A combination of grilles may be fitted together as a system to achieve much greater size, maximum 1500 x 1000mm.

Typical combinations:

INSTALLATION astro_fire_grille_02-rowno



1. Fit the opening to the grille. fire-grille1
2. Apply a small amount of ASTRO INTU MASTIC onto a grille along its edges and push the grille into the hole. fire-grille2

Secure the grille with steel screws every 150mm

at the center of the edges. Length of the screws must be matched to the place and method of installation.

For installation in the wall, where it is necessary to preserve the fire integrity, use steel angle bars with

steel screws every 150mm.

4. Fill out the voids with sealant ASTRO INTU MASTIC and install ASTRO PLATE sleeves on both sides of the partition for better protection of the grille and better aesthetic effect. fire-grille4



Free air flow table. Calculations made using 80% (approx.) free air flow.

100 150 200 225 250 300 350 400 450 500 550 600
100 80cm² 120cm² 160cm² 180cm² 200cm² 240cm² 280cm² 320cm² 360cm² 400cm² 440cm² 480cm²
150   180cm² 240cm² 270cm² 300cm² 360cm² 420cm² 480cm² 540cm² 600cm² 660cm² 720cm²
200     320cm² 360cm² 400cm² 480cm² 560cm² 640cm² 720cm² 800cm² 880cm² 960cm²
225       405cm² 450cm² 540cm² 630cm² 720cm² 810cm² 900cm² 990cm² 1080cm²
250         500cm² 600m² 700cm² 800cm² 900cm² 1000cm² 1100cm² 1200cm²
300           720cm² 840cm² 960cm² 1080cm² 1200cm² 1320cm² 1440cm²
350             980cm² 1120cm² 1260cm² 1400cm² 1540cm² 1680cm²
400               1280cm² 1440cm² 1600cm² 1760cm² 1920cm²
450                 1620cm² 1800cm² 1980cm² 2160cm²
500                   2000cm² 2200cm² 2400cm²
550                     2420cm² 2640cm²
600                       2880cm²

Circular grilles are available in 100, 125, 150, 200, 225, 250, 300, 350, 400 mm diameter sizes.




Aprobata NHBC

Badanie ogniowe zgodnie z BS 478, EN 1634-2