Latest News   |  New product Blue60 Frame Foam   |  Products in the news : Cavity Firestop & Ventilated Fire Barriers.

Home > Fire Grilles and Faceplates > Intumescent Grilles

Intumescent Grilles for Fire Doors.

All intumescent fire grilles are tested to BS 476: Part 22 1987 and EN 1634: Part 2.

A durable ventilation grille which is easily mounted in fire doors, & solid block walls, and can provide in excess of 60 Minutes fire rating.

Suitable for mounting up to 1,000mm (1m) from floor level.

Comprising of an intumescent slated core within a galvanized steel frame with vermin proof mesh fitted to both faces.

The design allows a free area of 80% approximately - see our table below for guidance

Maximum grille size is 600mm² or equivalent area, or use a combination of grilles up to a maximum size of 1500 x 1000mm.

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

Vermin proof mesh

Fire Tests:

Warrington Fire Research: Global Assessment C100767
Chiltern International Fire: FEA/F96117
Trada/Chiltern: RF95041

LOUVERED COVER PLATES:

We can supply steel Louvered Cover Plates (Air Transfer Plates) manufactured from a robust fabricated 2Oswg mild steel matched to the appropriate fire grille dimensions.Cover plates have a Satin Anodised Aluminium appearance.

Free Area Table: Intumescent Grilles. Top row is width dimension. First column is Height dimension. Sizes in mm

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
600cm2
700cm2
800cm2
900cm2
1000cm2
1100cm2
1200cm2
300
720cm2
840cm2
960cm2
1080cm2
1200cm2
1320cm2
1440cm2
350
980cm2
1120cm2
1260cm2
1400cm2
1540cm2
1680cm2
400
1280cm2
1120cm2
1600cm2
1760cm2
1920cm2
450
1620cm2
1800cm2
1980cm2
2160cm2
500
2000cm2
2200cm2
2400cm2
550                    
2420cm2
2640cm2
600                    
2880cm2
Calculations made using 80%(approx) free area.  Please note that this table does not allow for the effects of fitting any of the Fire Grille Face Plates, or any other type of aesthetically pleasing cover over the fire grille.
Intumescent Grilles 100x100mm to 250x250mm
Intumescent Grilles 100x100mm to 250x250mm Intumescent Fire Grilles in sizes from 100mm to 250mm width and 100mm to 250mm height
Fire Grilles 300x100mm to 350x350mm
Fire Grilles 300x100mm to 350x350mm Intumescent Fire Grilles in sizes from 300mm to 350mm width and 100mm to 350mm height
Fire Grilles 400x100mm to 600x600mm
Fire Grilles 400x100mm to 600x600mm Intumescent Fire Grilles in sizes from 400mm to 600mm width and 100mm to 6000mm height
Circular Fire Grilles
Circular Fire Grilles Circular grilles in 100, 125, 150, 200, 225, 250, 300, 350 and 400mm diameter sizes.